Consumables

Serological Pipettes

<h2 dir="ltr"> What Are Serological Pipettes?</h2>
 Serological pipettes are calibrated, graduated, sterile polystyrene disposable pipettes used with a motorised pipette controller to transfer measured volumes of liquid in the 1&ndash;100 mL range. They are the primary tool for cell culture media transfer, buffer preparation, reagent dispensing in volumes above 1 mL, and serial dilutions requiring volumetric accuracy in the millilitre range. They differ from aspirating pipettes &mdash; which have no graduations and are used only for vacuum-assisted waste removal &mdash; and from microcentrifuge tubes, which are not dispensing instruments. Serological pipettes are the correct format for any measured liquid transfer &ge;1 mL in cell culture or reagent preparation; pair them with a motorised pipette controller for safe, ergonomic operation. 
&nbsp;
<h2 dir="ltr">What you will find:</h2>
&nbsp;
<ul>
<li dir="ltr" role="presentation">1 mL to 50 mL Serological Pipettes &ndash; Standard range for routine and high-volume liquid transfer</li>
<li dir="ltr" role="presentation">Glass Serological Pipettes &ndash; Reusable options for solvent resistance and durability</li>
<li dir="ltr" role="presentation">Sterile Serological Pipettes &ndash; Gamma-sterilized for aseptic laboratory use</li>
<li dir="ltr" role="presentation">Non-Sterile Serological Pipettes &ndash; Cost-effective option for general applications</li>
<li dir="ltr" role="presentation">Graduated Serological Pipettes &ndash; For accurate volume measurement and dispensing </li>
</ul>
&nbsp;
<h2>How to Choose Serological Pipettes</h2>
 Volume: Standard Sizes and ISO 7550 Colour Coding ISO 7550 assigns a specific colour code to each serological pipette volume: 1 mL = red; 2 mL = yellow; 5 mL = blue; 10 mL = orange; 25 mL = green; 50 mL = purple (pink/violet depending on supplier). Colour coding allows quick visual volume identification when multiple sizes are in use simultaneously in a BSC. Packaging: Individual Wrap vs Bulk Individually wrapped sterile pipettes are required for cell culture, molecular biology, and aseptic technique. Plastic/plastic peel-open packaging eliminates paper particulate from paper/plastic wrappers &mdash; important in sensitive cell culture applications and for RNA work. Bulk-packed (canister or bag) formats are cost-effective for non-sterile applications such as buffer preparation and reagent dispensing in fume hoods. Construction: 1-Piece vs 3-Piece 1 mL, 2 mL, and 5 mL serological pipettes are typically one-piece moulded polystyrene constructions. 10 mL, 25 mL, and 50 mL pipettes use 3-piece ultrasonically welded construction (Globe Scientific) for the body-to-cone and body-to-cap joints &mdash; essential for the structural integrity of larger formats under aspiration vacuum. Tip and Graduation Features Negative graduations (markings above the nominal maximum) allow volumes slightly above nominal to be read. Fine-point tips with slow drip-off improve pipetting accuracy during cell culture media transfers. Some brands offer Wobble-not-style pipettes with reduced barrel flex for easier single-hand operation. Filter Plug Material Cotton filter plugs are standard; synthetic plugs (polyethylene or polypropylene) are preferred when processing organic solvents or any media that might wick through a cotton plug.
<h2 dir="ltr"> Compare Serological Pipette Volumes </h2>
&nbsp;
<ul>
<li>1 mL &ndash; Red ISO 7550 colour, 1-piece construction, 0.01 mL graduations; used for small-volume media transfer.</li>
<li>2 mL &ndash; Yellow ISO 7550 colour, 1-piece construction, 0.1 mL graduations; used for buffer preparation.</li>
<li>5 mL &ndash; Blue ISO 7550 colour, 1-piece construction, 0.1 mL graduations; used for media preparation and dilutions.</li>
<li>10 mL &ndash; Orange ISO 7550 colour, 3-piece construction, 0.1 mL graduations; used for flask media changes.</li>
<li>25 mL &ndash; Green ISO 7550 colour, 3-piece construction, 0.5 mL graduations; used for bulk media dispensing.</li>
<li>50 mL &ndash; Purple ISO 7550 colour, 3-piece construction, 1.0 mL graduations; used for large flask media changes.</li>
</ul>
<h2 dir="ltr"> Specifications Context</h2>
 Serological pipettes are manufactured from optically clear virgin polystyrene in Class 100,000 cleanroom conditions. Sterility: individually wrapped pipettes are EO-sterilised to SAL 10⁻⁶; non-pyrogenic, non-cytotoxic, DNase-free, and RNase-free per lot. ISO 7550 defines colour coding for serological pipettes; many US suppliers follow this standard, though it is not universally mandated. Calibrated to deliver (TD) with blow-out (marked with a double band or 'TD' marking) &mdash; all liquid must be expelled from the tip for accurate delivery. Globe Scientific, Nest Scientific, and Falcon remain the dominant serological pipette brands in North American cell culture labs.&nbsp; 
&nbsp;
Improve consistency and reduce handling variation with reliable serological pipette solutions. Request a quote from <a href="https://mbpinc.net/contact-us">the expert team at Molecular Biology Products Inc. (MBP).</a>

1864-Group-Serological Pipette Brochure

Open Ended Serological Pipettes

Open-ended, gamma-sterilized polystyrene serological pipettes by Globe Scientific (SKU 1864) calibrated to ±2% (ASTM E934) for accurate transfer of high-viscosity liquids including oils, cell-culture media, and cosmetics. Non-pyrogenic; SAL 10&#8722;6. Available in 2 mL, 5 mL, and 10 mL with ASTM E1380 colour coding. Individually wrapped.

Manufacture

Serological Pipette, 2mL, PS, Open End, 270mm, STERILE, Green, Individually Wrapped, Paper/Plastic, BOX/800

Serological Pipette, 5mL, PS, Open End, 310mm, STERILE, Blue, Individually Wrapped, Paper/Plastic, BOX/300

Serological Pipette, 10mL, PS, Open End, 310mm, STERILE, Red, Individually Wrapped, Paper/Plastic, BOX/200

PCR Tubes

<h2 data-path-to-node="1"> What Are PCR Tube Racks?</h2>
 PCR tube racks are polypropylene holders that maintain 0.2 mL PCR tubes and strip tubes in a stable 8&times;12 (96-position) upright array during reaction setup, pre-PCR storage, and post-amplification handling. They stabilise tubes during multichannel pipetting, prevent tip deflection when dispensing with an 8-channel pipette, and serve as organisational tools for pre- and post-PCR sample management. Most racks accept both individual 0.2 mL tubes and 8-strip or 12-strip tubes in the same 96-well footprint.&nbsp;
&nbsp;
<h2 data-path-to-node="2">What you will find:</h2>
&nbsp;
<ul data-path-to-node="3">
<li>
96-well PCR tube racks for standard tube organization
</li>
<li>
Color-coded PCR tube racks for sample tracking
</li>
<li>
Stackable PCR tube racks for space-saving storage
</li>
<li>
Autoclavable polypropylene tube racks for sterile workflows
</li>
<li>
Racks for 0.2 mL PCR tubes and strip tubes
</li>
<li>
Freezer-safe PCR tube storage racks for long-term use
</li>
<li>
Ice-compatible PCR tube racks for cold-chain handling
</li>
<li>
Multi-format tube racks for mixed sample workflows
</li>
</ul>
<h2 data-path-to-node="1"> How to Choose PCR Tube Racks</h2>
 Well Diameter and Tube Compatibility Standard 96-well PCR racks have a 5.2 mm well diameter, compatible with most 0.2 mL thin-wall PCR tubes from Globe Scientific, Nest Scientific, Axygen/Corning, Eppendorf, and equivalent brands. Confirm the collar diameter of your specific tube brand before ordering if using non-standard tube geometry. Lid: Hinged Flat vs Translucent Cover vs No Lid Hinged flat lids lie flush when open for unobstructed pipette access; the lid can be closed to protect tubes during incubation or transport. Translucent polycarbonate lids allow visual sample inspection without lid removal &mdash; useful for barcode readers that scan through the cover. Lidless racks are the simplest format for bench use, where brief sample exposure is acceptable. Colour Coding Racks are available in single colours (blue, green, pink, yellow, orange) and assorted multi-colour packs. Colour-coded racks help segregate pre-PCR and post-PCR samples, reducing cross-contamination risk in labs without fully separated pre/post-PCR workspaces. Autoclavability Polypropylene PCR tube racks are autoclavable at 121&deg;C (250&deg;F) for sterilisation between use cycles. Polycarbonate lids withstand repeated autoclave cycles at standard sterilisation conditions. SBS Footprint for Automation Select PCR strip racks with an SBS/SLAS-compliant footprint (127.76 &times; 85.47 mm) to enable use with robotic liquid handlers and automated workstations when processing strip tubes on automation platforms. 
<h2 data-path-to-node="1"> Specifications Context</h2>
 Standard 96-well PCR tube racks measure approximately 130 &times; 98 &times; 33 mm (L &times; W &times; H) with 5.2 mm well diameter and 9 mm well spacing. Polypropylene construction is chemical-resistant and autoclavable at 121&deg;C. Alphanumeric embossed grid (A&ndash;H rows, 1&ndash;12 columns) matches the labelling of PCR plates and plates for straightforward sample mapping. SP Bel-Art 96-well PCR racks and equivalent formats from Heathrow Scientific and Globe Scientific are widely distributed in North American research labs.&nbsp; 
&nbsp;
<a href="https://mbpinc.net/contact-us">Contact the MBP team now</a> to keep your samples in order so your workflow stays smooth from prep to analysis.

PCR Tube Racks

<h2 dir="ltr"> What Are 8-Strip PCR Tubes?</h2>
 8-strip PCR tubes are a connected row of eight individual thin-wall polypropylene tubes supplied as a single unit, designed for simultaneous processing of eight reactions per strip. The strip format accommodates multichannel pipettes at standard 9 mm well spacing, reducing setup time compared to handling individual tubes one at a time. Available in 0.2 mL for standard thermal cycler blocks and 0.1 mL for fast-block or low-profile instruments. Caps are available attached (dome or flat) or as separate cap strips for labs that prefer independent tube and cap management. 8-strip tubes are the most efficient manual format for 8- or 16-sample PCR batches &mdash; choose 0.2 mL for standard blocks, 0.1 mL for fast-block cyclers.
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<h2>What you will find: <a href="https://mbpinc.net/8-strip-pcr-tubes" title="8-strip PCR Tubes"></a></h2>
&nbsp;
<ul>
<li dir="ltr" aria-level="1">
0.2 mL 8-strip PCR tubes for standard thermal cyclers
</li>
<li dir="ltr" aria-level="1">
Clear 8-strip tubes for general PCR applications
</li>
<li dir="ltr" aria-level="1">
White 8-strip PCR tubes for improved qPCR signal detection
</li>
<li dir="ltr" aria-level="1">
Optically clear strip caps for real-time PCR assays
</li>
<li dir="ltr" aria-level="1">
Flat cap 8-strip tubes for tight sealing performance
</li>
<li dir="ltr" aria-level="1">
Attached cap strip tubes for faster workflow setup
</li>
<li dir="ltr" aria-level="1">
DNase- and RNase-free PCR strip tubes for clean reactions
</li>
<li dir="ltr" aria-level="1">
Thin-wall 8-strip tubes for fast and even heat transfer
</li>
<li dir="ltr" aria-level="1">
Compatible strip formats for most PCR and qPCR instruments
</li>
</ul>
<h2 dir="ltr"> How to Choose 8-Strip PCR Tubes</h2>
 Volume: 0.2 mL vs 0.1 mL Standard 0.2 mL strips fit conventional tall-block cyclers, including Bio-Rad T100, Eppendorf Mastercycler, and Applied Biosystems Veriti. Low-profile 0.1 mL strips are required for fast-block instruments such as the Applied Biosystems StepOnePlus, Bio-Rad CFX96 Fast, and Roche LightCycler 480, where the shallower well reduces thermal equilibration time and supports faster cycling protocols. Cap Style: Dome vs Flat, Optical vs Separate Cap Strip Attached dome caps are the standard choice for endpoint PCR, where no fluorescence is read through the cap lid. Flat optically clear attached caps &mdash; or separately purchased optical cap strips &mdash; are required for real-time qPCR when detection occurs through the top of the tube; dome caps attenuate fluorescence and compromise Ct consistency. Separate cap strips offer flexibility to mix dome and flat caps on the same strip. Attached vs Separate Caps Attached caps prevent cap mix-ups and reduce handling steps in high-throughput setups. Separate cap strips (tube strip + cap strip sold together in the same bag) allow independent tube loading and cap seating &mdash; preferred when using automated liquid handlers or when labelling the cap exterior is important. Colour Options Clear strips are standard; assorted colour packs (clear, red, yellow, blue, green) allow colour-coded sample tracking. White polypropylene strips increase qPCR fluorescence signal in bottom-read optical configurations by reflecting emission back through the detector. Strip Rigidity Split-apart strips (perforated between tubes) allow individual tubes to be broken off from the strip &mdash; useful when fewer than 8 reactions are needed and waste reduction matters. 
<h2 dir="ltr"> Specifications Context</h2>
 8-strip tube walls are typically 0.25&ndash;0.35 mm thick virgin polypropylene free of additives, antistatic agents, and dyes. Certified DNase-free, RNase-free, human DNA-free, and PCR inhibitor-free per independent lot testing. Standard packs contain 120 strips (960 reactions) for 0.2 mL format; 0.1 mL packs are often 120 strips as well. As of 2026, Axygen (Corning) PCR-0208-C and equivalent Globe Scientific formats are widely distributed through North American channels.&nbsp;
&nbsp;
<a href="https://mbpinc.net/contact-us">Contact the MBP team</a> now if your workflow depends on speed and accuracy; this format keeps everything simple without losing control over your reactions.

8 Strip PCR Tubes

Brochure

PCR Caps Strips, Separate

PCR-02DC by Diamond&#174; is an 8-strip PCR cap strip sold separately from tube strips, featuring 45&#176; angled caps that prevent SBS rack interference. Available in DiamondLink&#8482; and QuickSnap&#8482; formats, with low-profile and white options. Certified DNase-free, RNase-free, Human DNA-free, and PCR inhibitor-free. Compatible with Diamond&#174; 0.2 mL strip tubes and most standard 8-strip formats. Order at mbpinc.net or email customerservice@mbpinc.net.

0.2mL 8-Strip Dome Caps, No Tubes, Natural, CS/1250

0.2mL 12-Strip Dome Caps, No Tubes, Natural, CS/800

0.2mL 8-Strip Flat Caps, No Tubes, Optically-Clear for qPCR, CS/1250

0.2mL 12-Strip Flat Caps, No Tubes, Optically-Clear for qPCR, CS/800

<h2 dir="ltr"> What Are PCR Tubes?</h2>
 PCR tubes are single-use, thin-wall polypropylene reaction vessels engineered for rapid, uniform heat transfer between the thermal cycler block and the PCR reaction. Wall thickness is typically 0.25&ndash;0.35 mm &mdash; thinner than standard microcentrifuge tubes &mdash; allowing the cycler's heating/cooling ramp rates to reach the sample faster and with greater uniformity. Use 0.2 mL tubes for standard cyclers and 0.1 mL tubes for fast-block or Rotor-Gene instruments.
&nbsp;
<h2 dir="ltr">What you will find: </h2>
&nbsp;
<ul>
<li data-section-id="1r57fs8" data-start="0" data-end="135"><a href="https://mbpinc.net/consumables/pcr-consumables/pcr-tubes/individual-pcr-tubes">Individual PCR Tubes: </a>Ideal for single-sample PCR workflows, offering reliable thermal performance and secure sample containment.</li>
<li data-section-id="10bust3" data-start="137" data-end="292"><a href="http://mbpinc.net/consumables/pcr-consumables/pcr-tubes/corbett-style-pcr-tubes">Corbett Style PCR Tubes: </a>Designed for compatibility with Corbett&reg; and Rotor-Gene&reg; real-time PCR systems, ensuring precise fit and consistent results.</li>
<li data-section-id="ggoq4m" data-start="294" data-end="436" data-is-last-node=""><a href="http://mbpinc.net/consumables/pcr-consumables/pcr-tubes/8-strip-pcr-tubes">8 Strip PCR Tubes:</a> Convenient strip format enables efficient processing of multiple PCR samples while maintaining uniform heat transfer.</li>
</ul>
<h2 dir="ltr"> How to Choose PCR Tubes</h2>
 Block Format: Standard vs Fast (Low-Profile) Standard 0.2 mL tubes are compatible with tall-block cyclers, including the Bio-Rad T100, Eppendorf Mastercycler EP, and Thermo Scientific SimpliAmp. Low-profile 0.1 mL tubes are required for fast-block instruments &mdash; Applied Biosystems StepOnePlus, Bio-Rad CFX96 Fast, and QIAGEN/Corbett Rotor-Gene &mdash; where the shallower well geometry accelerates thermal equilibration. Strip vs Individual Tube Format Individual tubes offer flexibility for small reaction sets and allow colour-coding by sample. 8-strip tubes speed up multichannel pipetting and reduce handling time when processing 8 or 16 samples per run. Corbett-style 4-strip tubes are the correct choice when running the QIAGEN Rotor-Gene instrument; standard 8-strip tubes do not fit its 72-well circular rotor. Cap Style Attached dome caps are sufficient for endpoint PCR. Attached flat caps or separately purchased optical caps are required for real-time qPCR fluorescence detection through the cap; dome caps attenuate fluorescence signal and should not be used with probe-based or SYBR-based qPCR when reading through the lid. Purity and Certification Specify tubes certified DNase-free, RNase-free, human DNA-free, and PCR inhibitor-free; independent lot-level testing is the quality standard. Tubes manufactured in cleanroom conditions (e.g., Class 100,000 equivalent) minimise particulate contamination risk. 
<h2 dir="ltr"> Specifications Context</h2>
 PCR tubes are manufactured from virgin polypropylene free of additives, dyes, and antistatic agents that could interfere with enzyme activity. Ultra-thin walls (0.25&ndash;0.35 mm) and transparent clarity facilitate visual inspection of the reaction volume. As of 2026, manufacturers including Axygen (Corning), SSI Bio, and Globe Scientific supply Corbett-compatible 4-strip formats widely distributed through North American channels. For tube rack accessories compatible with individual 0.2 mL and 0.5 mL tubes, see the PCR Tube Racks section within this category.
&nbsp;
For selection guidance or availability, <a href="https://mbpinc.net/contact-us">reach out to the MBP team</a> and get the right PCR tube format for your workflow.

PCR-COLDP-Group-PCR Products Brochure

PCR Cold Prep Racks

Globe Scientific PCR Cold Prep Racks (SKU PCR-COLDP) — maintain 4°C on the bench for ~3 hours after freezer storage. Built-in thermochromic indicator turns green-to-yellow as temperature rises from 4°C to 7°C. No ice required. Keeps PCR reagents and master mixes cold during reaction setup.

PCR Cold Work Rack, 4°C, 96 well for PCR Plates and Strips, Purple to Pink, 10/Cs

PCR Cold Work Rack, 4°C, 96 well for PCR Plates and Strips, Green to Yellow, 10/Cs

PCR Cold Work Rack, SBS / ISBER Footprint, 4°C, 96 well for PCR Plates and Strips, Purple to Pink, 10/Cs

PCR Cold Work Rack, SBS / ISBER Footprint, 4°C, 96 well for PCR Plates and Strips, Green to Yellow, 10/Cs

PCR Cold Work Rack, 4°C, holds 64 x 0.1mL for Corbett Style 4-Strip Tubes, 16 x 0.2mL PCR Tubes, 4 x 0.5mL PCR Tubes, Blue to White, 10/Cs

PCR Tube Strips, Separate

PCR-02S by Globe Scientific is the Diamond® PCR Tube Strips, Separate line — available in DiamondLink™ (reinforced links) and QuickSnap™ (breakable links) formats, supplied without caps. Ultra-thin 0.2mm walls, SBS-format rack compatibility, and DNase/RNase/Human DNA/PCR inhibitor-free certification. Standard and low-profile options. Order from MBP, a trusted lab supplier across the USA and Canada.

0.2mL 8-Strip Tubes, No Caps, Natural, CS/1250

0.2mL 12-Strip Tubes, No Caps, Natural, CS/800

PCR Tube and Cap Strip Combo Packs

PCR-STR-02 by Globe Scientific is the Diamond® PCR Tube and Cap Strip Combo Pack — 8-strip tubes with matched attached caps in DiamondLink™ or QuickSnap™ format. Ultra-thin 0.2mm walls, 45°-angled caps, SBS-rack compatible. DNase-free, RNase-free, PCR inhibitor-free. Low-profile and white options for qPCR. Fast shipping from MBP across the USA and Canada.

0.2mL 8-Strip Tubes, with Separate 8-Strip clear Dome caps, Natural, CS/1250

0.2mL 12-Strip Tubes, with Separate 12-Strip clear Dome caps, Natural, CS/800

0.2mL 12-Strip Tubes, with Separate 12-Strip clear Flat caps, Natural, CS/800

0.2mL 8-Strip Tubes, with Separate 8-Strip Clear Flat Caps, Natural, CS/1250

0.1mL 8-Strip Tubes, Low Profile, with Separate 8-Strip Clear Flat Caps, Natural, CS/1250

0.1mL 8-Strip Tubes, Low Profile, with Separate 8-Strip Clear Flat Caps, White, CS/1250

PCR-WORKRACK-Group-PCR Products Brochure

PCR Work Racks

PCR Work Racks (PCR-WORKRACK) – 96-position (8×12) bench-top racks for 0.2 mL PCR tubes, tube strips, and strip caps. Chemical-resistant polypropylene construction. UV decontamination compatible. Low-profile grid design for error-free sample tracking during PCR setup and handling. Globe Scientific.

PCR Work Racks, with Lids, holds 32 x 0.2mL PCR Tubes, 16 x 0.5mL PCR Tubes, 24 x 1.5/2.0mL Microcentrifuge Tubes, Five (5) Racks per Pack, 10/Cs

PCR Work Racks, 96 well for PCR Plates and Strips, Five Fluorescent Colors (Green, Pink, Yellow, Orange, Blue), 20/Cs

Stackable PCR Work Racks, 96 well for PCR Plates and Strips, Five Fluorescent Colors (Green, Yellow, Violet, Red, Blue), 20/Cs

Cuvettes

<h2 dir="ltr">What are Cuvettes?</h2>
 Cuvettes are small, precision-dimensioned transparent vessels used to hold liquid samples in the light path of a spectrophotometer, fluorometer, or colorimeter for measurement of absorbance, transmittance, fluorescence intensity, or fluorescence polarization. The standard cuvette has a 10 mm optical path length (the distance light travels through the sample), a square or rectangular cross-section, and an internal volume of 1&ndash;4 mL. Cuvettes are manufactured in four main materials&mdash;polystyrene (PS) or polymethylmethacrylate (PMMA) plastic, optical glass, UV-grade quartz (fused silica), and IR quartz&mdash;each covering a different wavelength range. Choose plastic cuvettes for routine visible-light absorbance (380&ndash;780 nm) where disposability prevents cross-contamination; choose optical glass for reusable visible-range work (340&ndash;2,500 nm); choose UV quartz when measurements extend into the UV range below 340 nm (190&ndash;2,500 nm).
&nbsp;
<h2 dir="ltr">What you will find:</h2>
&nbsp;
<ul>
<li data-section-id="1cg0wqn" data-start="1810" data-end="1862">Spectrophotometer cuvettes for absorbance analysis</li>
<li data-section-id="vbobpt" data-start="1863" data-end="1890">Polystyrene (PS) cuvettes</li>
<li data-section-id="14z5a6i" data-start="1891" data-end="1906">PMMA cuvettes</li>
<li data-section-id="1h4vr7o" data-start="1907" data-end="1966">Analyzer-specific cuvettes for clinical chemistry systems</li>
<li data-section-id="b3k6fl" data-start="1967" data-end="1998">Standard path length cuvettes</li>
<li data-section-id="td8a19" data-start="1999" data-end="2043">Accessories for spectrophotometer cuvettes</li>
</ul>
<h2 dir="ltr"> How to Choose Cuvettes</h2>
 Material and Wavelength Range Plastic (PS/PMMA) cuvettes transmit visible light from 380&ndash;780 nm and are single-use, eliminating cleaning and cross-contamination risk. They are unsuitable for UV measurements, organic solvents, or strong acids. Optical glass cuvettes transmit 340&ndash;2,500 nm, covering the full visible and near-infrared range; Different manufacturers recommend different procedures. UV quartz cuvettes are traditionally used for DNA/RNA quantification at OD260/OD280 because they transmit UV wavelengths below 340 nm. IR quartz extends to 3,500 nm for near-IR applications. Optical Path Length The standard 10 mm path length follows the Beer-Lambert law at normal sample concentrations. Semi-micro (5 mm path) and micro-volume cuvettes (1 mm path, or internal volumes down to 10&ndash;70 &micro;L) are used for precious or limited-volume samples. The path length directly multiplies absorbance: a 1 mm cuvette gives 1/10 the absorbance of a 10 mm cuvette for the same solution &mdash; account for this in Beer-Lambert calculations. Volume: Macro vs. Semi-Micro vs. Micro Macro cuvettes (1&ndash;4 mL) are the standard for routine spectrophotometry. Semi-micro cuvettes (0.5&ndash;1.5 mL) reduce sample consumption. Micro cuvettes (10&ndash;350 &micro;L) are used when sample volume is limited; sub-micro cuvettes (10 &micro;L or less) suit precious clinical or research samples. Confirm that your spectrophotometer's beam height and aperture are compatible with the cuvette format before purchasing micro formats. Two-Window vs. Four-Window Standard cuvettes have two optically clear windows (the light-entry and exit faces) and two frosted or ribbed side walls for gripping. Four-window (all-clear) cuvettes are required for fluorescence measurements at 90&deg; to the excitation beam &mdash; the two additional clear windows allow emitted fluorescence to exit perpendicular to the excitation path. Confirm whether your instrument requires a standard or fluorescence-grade cuvette. Reusable vs. Disposable Quartz and glass cuvettes are reusable; their higher up-front cost&nbsp;is justified for low-throughput precision work or when solvents or UV wavelengths are required. Plastic cuvettes cost fractions of a cent per use and eliminate washing time in high-throughput assay workflows. Select disposable plastic for any routine colorimetric assay (Bradford, BCA, ELISA plate reader backup, OD600 bacterial growth) where wavelengths stay in the visible range. 
<h2 dir="ltr"> Specifications Context</h2>
&nbsp;
The 10 mm path length standard cuvette has internal dimensions of 10 &times; 10 mm cross-section and an internal height of approximately 45 mm. Outer dimensions are 12.5 &times; 12.5 mm, fitting all standard spectrophotometer cell holders. Window parallelism tolerance is &plusmn;0.01 mm for precision quartz cuvettes; standard optical glass cuvettes have &plusmn;0.1 mm tolerance. Light transmission through UV quartz: &gt;90% at 220 nm and &gt;85% at 200 nm. For nucleic acid quantification, a UV quartz cuvette with a minimum path length of 10 mm is required for OD 260/280 measurements; the ratio of OD260/OD280 should be 1.8&ndash;2.0 for pure DNA and 1.9&ndash;2.1 for pure RNA as a purity indicator. As of 2026, plastic disposable cuvettes remain the most cost-efficient choice for labs running &gt;50 absorbance readings per day in the visible range.
&nbsp;
Need the right fit? MBP can guide you to cuvettes that match your workflow perfectly. For institutional pricing and PO-based bulk ordering, <a href="https://mbpinc.net/contact-us" style="color: #236fa1; text-decoration: underline;">contact MBP</a>&nbsp;directly.

111147-Group-Analyzer Consumables Catalog

111147-Group-TDS-112157

111147-Group-TDS-112147

111147-Group-TDS-111157

111147-Group-TDS-111147

PMMA Spectrophotometer Cuvette

111147 by Globe Scientific is a disposable UV-grade PMMA macro spectrophotometer cuvette: 4.5 mL capacity, 10 mm pathlength, 280–800 nm range, 2 clear sides, ±1% absorption variation. Supplied 500/case. Suitable for nucleic acid quantification, protein assays, and colorimetric analysis.

Cuvette, Spectrophotometer, Square, 4.5mL (10mm), UV Grade Methacrylate, 2 Clear Sides, 100/Tray, 5 Trays/Unit, 1000/CS

Cuvette, Spectrophotometer, Square, 4.5mL (10mm), UV Grade Methacrylate, 4 Clear Sides, 100/Tray, 5 Trays/Unit, CS/500

Cuvette, Semi-Micro, 2.5mL, with 2 Clear Sides, UV Grade Polymethylmethacrylate (PMMA), 100/Tray, 5 Trays/Unit, 1000/Cs

Cuvette, Micro, 1.5mL, with 2 Clear Sides, UV Grade Polymethylmethacrylate (PMMA), 100/Tray, 5 Trays/Unit, CS/500

Transfer Pipettes

<h2>What are disposable transfer pipettes?</h2>
&nbsp;
Disposable transfer pipettes are single-use plastic liquid-handling tools made from low-density polyethylene (LDPE). They are designed as a one-piece bulb-and-stem system used for transferring, dispensing, and handling small volumes of liquids in laboratory workflows.
They are commonly used as a safer and more convenient alternative to glass Pasteur pipettes. Being plastic and disposable, they eliminate the risk of breakage, reduce cross-contamination, and remove the need for separate rubber bulbs. The flexible bulb allows controlled aspiration and dispensing of reagents, samples, and solutions.
&nbsp;
<h2>What you will find:</h2>
&nbsp;
<ul>
<li>Graduated transfer pipettes &ndash; for approximate volume measurement and controlled dispensing</li>
<li>Non-graduated transfer pipettes &ndash; for simple liquid transfer without measurement markings</li>
<li>Fine-tip transfer pipettes &ndash; for small droplets and precise spot dispensing</li>
<li>Sterile transfer pipettes &ndash; for microbiology and contamination-sensitive workflows</li>
<li>Non-sterile transfer pipettes &ndash; for routine laboratory use</li>
<li>Disposable Pasteur pipettes &ndash; for general single-use liquid handling</li>
</ul>
&nbsp;
<h2>How to choose transfer pipettes</h2>
&nbsp;
Tip style Fine-tip pipettes are used for precise work such as microplate spotting and small-volume handling. Standard tips are suitable for general transfers, while wide-bore designs are better for viscous liquids or blood samples. Longer stems help access deep containers.
Capacity and volume handling Select pipettes based on typical working volumes. Smaller pipettes are suitable for low-volume transfers, while larger ones are used for routine sample handling. The effective draw volume depends on bulb capacity and usage technique.
Graduated vs non-graduated Graduated pipettes allow approximate volume estimation and are useful in clinical and diagnostic workflows. Non-graduated pipettes are intended for general dispensing where precise measurement is not required.
Sterility requirements Sterile pipettes are used in microbiology, cell culture, and clinical applications where contamination control is essential. Non-sterile versions are suitable for general laboratory and teaching use.
Length and accessibility Long pipettes are preferred for deep vessels such as flasks and bottles, while shorter designs are used for compact tubes and small workspaces.
&nbsp;
<h2>Specifications context</h2>
&nbsp;
Disposable LDPE transfer pipettes are widely used laboratory consumables for general-purpose liquid handling in research, clinical, and educational environments. They are available in sterile and non-sterile formats with multiple tip designs and capacities to support different workflows.
These pipettes remain a standard alternative to glass Pasteur pipettes due to their safety, low cost, and reduced contamination risk in routine laboratory applications.
For bulk orders or lab-specific requirements, <a href="https://mbpinc.net/contact-us">contact the MBP team</a> for assistance and pricing.

Transfer Pipet Brochure

Paddle Transfer Pipettes

136080 by Globe Scientific is a one-piece LDPE paddle transfer pipette: 0.8 mL total capacity, 0.2 mL bulb draw, 125 mm long, 3.6 mm paddle tip. The broad flat paddle tip is designed for spreading and smearing on agar plates, slides, and membrane filters. Non-sterile, -50°C to +75°C rated, 500/box, 5,000/case.

Transfer Pipet, 0.8mL, Special Purpose with Paddle, 125mm, 500/Dispenser Box, 10 Boxes/Unit

Transfer Pipet, 0.8mL, Special Purpose with Paddle, 125mm, 500/Dispenser Box

Cryogenic Vials

<h2>What Are Cryogenic Vials?</h2>
&nbsp;
Cryogenic vials are specialized screw-cap laboratory containers manufactured from cryogenic-grade virgin polypropylene (PP) and designed to withstand extreme temperatures ranging from &minus;196&deg;C in liquid nitrogen storage to +121&deg;C during steam autoclaving. They serve as the primary storage vessel for biological materials requiring long-term preservation, including cell lines, serum, plasma, blood samples, DNA, RNA, microbial cultures, and other biospecimens. Common vial capacities include 1.2 mL, 1.5 mL, 1.8 mL, 2 mL, 3 mL, and 5 mL, with the 2 mL format being the most widely used standard for cell culture and biobanking applications. Most cryogenic vials feature leak-resistant screw caps with silicone sealing gaskets and dedicated writing areas for sample identification. For storage in liquid nitrogen, it is important to use vials specifically certified for cryogenic applications, as standard laboratory tubes are not designed to tolerate temperatures as low as &minus;196&deg;C.
&nbsp;
<h2>What You Will Find:</h2>
&nbsp;
<ul>
<li><a href="https://mbpinc.net/consumables/cryogenic-storage/cryogenic-vials/cryo-boxes" title="Cryo Boxes">Cryo Boxes:</a> High-durability polycarbonate storage systems with integrated grids for rapid, indexed sample retrieval in ultra-low environments.</li>
<li><a href="https://mbpinc.net/consumables/cryogenic-storage/cryogenic-vials/freezer-boxes" title="Freezer Boxes">Freezer Boxes:</a> Moisture-resistant and stackable organizers designed to maximize space and maintain thermal consistency within -20 degree celsius and -80 degree celsius freezers.</li>
<li><a href="https://mbpinc.net/consumables/cryogenic-storage/cryogenic-vials/externally-threaded-cryogenic-vials" title="Externally Threaded Cryogenic Vials">Externally Threaded Cryogenic Vials</a>: Designed with threads on the outside of the vial to minimize contamination risk and maximize the internal volume for sample storage.</li>
<li><a href="https://mbpinc.net/consumables/cryogenic-storage/cryogenic-vials/internally-threaded-cryogenic-vials" title="Internally Threaded Cryogenic Vials">Internally Threaded Cryogenic Vials</a>: Featuring a silicone O-ring seal and internal threads to provide the most secure, leak-proof closure for vapor-phase LN2 storage.</li>
</ul>
&nbsp;
<h2>How to Choose Cryogenic Vials</h2>
&nbsp;
Thread Type: Internal vs. External
Thread design influences both contamination control and workflow compatibility. Internal-thread vials position the sealing mechanism inside the neck of the vial, reducing the external surface area exposed to contaminants and making them a common choice for cell culture and biosafety-sensitive applications. External-thread vials place the threads on the outside of the vial neck, maximizing internal storage volume and improving compatibility with automated capping, decapping, and robotic handling systems. Laboratories using automated biobanking workflows often prefer external-thread formats.
Volume Selection
Vial capacity should match the intended sample type and storage requirements. The 1.8&ndash;2.0 mL size is commonly used for cell lines, serum aliquots, and general biospecimen storage because it fits standard cryogenic storage boxes. Smaller 1.2 mL formats support high-density storage of limited-volume samples, while larger 3&ndash;5 mL vials are suitable for tissue specimens, bacterial glycerol stocks, and applications requiring larger sample volumes.
Sterility and Purity Certification
For cell culture, molecular biology, and clinical research applications, cryogenic vials should be supplied with certifications confirming they are RNase-free, DNase-free, non-pyrogenic, and endotoxin-free. Many laboratories also prefer gamma-sterilized vials, which reduce contamination risk and eliminate the need for additional sterilization before use. Traceable lot documentation and certificates of conformity are often required in regulated environments.
Self-Standing vs. Round Bottom Designs
Self-standing cryogenic vials feature a molded base that allows them to remain upright on laboratory benches without additional support, reducing the risk of spills during sample handling. Round-bottom designs are compatible with a broader range of storage racks and cryogenic systems but generally require a rack or holder during bench-top use. The choice largely depends on laboratory workflow and storage equipment.
&nbsp;
<h2>Specifications Context</h2>
&nbsp;
Cryogenic vials are typically manufactured from high-purity polypropylene because of its excellent durability and resistance to ultra-low temperatures. Products intended for liquid nitrogen immersion should carry explicit certification for liquid-phase storage, as some vials are approved only for vapor-phase applications. Vial dimensions, particularly outer diameter, determine compatibility with freezer boxes, racks, and automated storage systems, so measurements should be confirmed before mixing products from different manufacturers. Modern biobanking facilities increasingly use externally threaded, 2D-barcoded cryogenic vials integrated with laboratory information management systems (LIMS) to improve inventory tracking, sample traceability, and large-scale repository management.
Protect your research legacy. <a href="https://mbpinc.net/contact-us">Connect with the Molecular Biology Products Inc. team</a> for a custom quote on our complete cryogenic storage range.

Cryogenic Vial Brochure

Picker for CryoClear vials, TPE, Blue, 10/Bag

30078 by Globe Scientific is a blue thermoplastic elastomer (TPE) cryogenic vial picker designed for safe retrieval of CryoClear vials from storage boxes. The picker engages the notch on the CryoClear cap, allowing single-vial extraction without direct hand contact, glove removal, or disturbance of adjacent samples. TPE remains flexible at cryogenic temperatures. Supplied 10/bag. Order

Test Tubes

<h2 dir="ltr">What are Test Tubes?</h2>
 Test tubes for laboratory use are open-ended, cylindrical glass or plastic tubes used to hold, mix, incubate, and heat liquid and solid samples across a broad range of applications: bacteriological culture, tissue culture, clinical chemistry, serological assays, immunology, and general sample processing. Choose borosilicate glass for reusable, high-temperature, or chemically demanding applications; choose polystyrene disposable 12&times;75 mm tubes for flow cytometry and colorimetric assays; choose polypropylene capped tubes for microbial culture with anaerobic or gas-generating organisms.
&nbsp;
<h2 dir="ltr">What you will find:</h2>
&nbsp;
<ul>
<li dir="ltr" aria-level="1">Glass test tubes in diverse formats for heating and chemical reaction workflows</li>
<li dir="ltr" aria-level="1">
Plastic polypropylene test tubes for routine laboratory use
</li>
<li dir="ltr" aria-level="1">
Graduated tubes for quick and easy volume estimation
</li>
<li dir="ltr" aria-level="1">
Conical and round-bottom tube formats for different applications
</li>
<li dir="ltr" aria-level="1">
Sterile disposable test tubes for clinical and diagnostic work
</li>
<li dir="ltr" aria-level="1">
Heat-resistant tubes for incubation and controlled heating steps
</li>
</ul>
&nbsp;
<h2 dir="ltr">How to Choose Test Tubes</h2>
 Material: Glass vs. Polypropylene vs. Polystyrene Borosilicate glass 3.3 (ASTM E438 Type I, Class B) test tubes withstand direct flame, autoclave sterilization at 121 &deg;C, and most solvents, acids, and bases. They are reusable and autoclavable, making them cost-effective over high-volume laboratory runs. Polystyrene (PS) disposable tubes offer outstanding optical clarity for flow cytometry (FACS), cell counting, and OD-based colorimetric assays, but cannot be autoclaved and should not be used with aromatic solvents or strong acids. Polypropylene (PP) tubes are chemically resistant, autoclavable, and available with screw caps for anaerobic culture or gas-generating reactions. Rimmed vs. Rimless Rimless test tubes (fire-polished ends) allow easier insertion of rubber or silicone stoppers and are preferred for plugging with cotton wool for microbial culture. Rimmed tubes have a flared lip that facilitates pouring and is compatible with spring-metal tube closures. Confirm your closure type before ordering in bulk. Size and Volume The most common test tube dimensions in clinical and research labs: 12&times;75 mm: ~5 mL capacity; standard for flow cytometry, FACS, serology 13&times;100 mm: ~10 mL; general culture and chemistry 16&times;100 mm: ~14 mL; culture and chemistry 16&times;125 mm: ~17 mL; microbiological culture 18&times;150 mm: ~25 mL; larger-volume digests and culture Wall thickness of 1.2 mm (light wall, borosilicate 3.3) is the standard for general lab use; heavy-wall versions are used for digestions and applications involving vacuum or pressure. Sterile vs. Non-Sterile Sterile borosilicate glass culture tubes (individually wrapped or bulk-sterilized) are required for microbial culture, cell culture, and any application where contamination would invalidate the result. Non-sterile tubes are adequate for chemistry, spectroscopy, and other abiotic applications. Disposable PS tubes from Corning (PYREX&trade;) and Globe Scientific are supplied sterile or non-sterile; confirm the specification on the lot certificate. 
<h2 dir="ltr"> Specifications Context</h2>
 Borosilicate glass 3.3 test tubes have a linear thermal expansion coefficient of 3.3 &times; 10⁻⁶ K⁻&sup1;, providing resistance to thermal shock from room temperature to 300 &deg;C (direct flame) and from 0 to 121 &deg;C (autoclave cycles). Light-wall tubes (1.2 mm uniform wall thickness) provide the standard for general laboratory use; heavy-wall variants (2.0 mm) are used for digestion vessels and pressurized applications. Corning PYREX&trade; disposable round-bottom rimless glass tubes for tissue culture conform to ASTM standards and are the reference format for bacteriological serology and cell wash procedures. MBP supplies Globe Scientific and NEST Scientific test tube lines for research and clinical labs across the USA, Canada, and worldwide. &nbsp; 
If you&rsquo;re choosing between glass and plastic or trying to match the right size to your workflow, it&rsquo;s worth getting that part right early &mdash; it makes everything downstream smoother and a lot less messy. <a href="https://mbpinc.net/contact-us">Contact the MBP team now!</a>

Tubes, Caps & Racks Catalog

Lab Supplies for Physicians Offices

113150-TDS-113150-113151

Pierceable Plug Stopper for Test Tubes

113150A by Globe Scientific is an amber TPE pierceable plug stopper for 13 mm vacuum blood collection tubes and test tubes. Reseals after syringe or autoanalyzer probe piercing; latex-free. Suitable for recapping, closed-system sampling, and needle-access tube storage. Available in multiple colors for tube color-coding.

Cap, Plug, 12/13mm, Santoprene, for Vacuum and Test Tubes, GRAY, 1000/Pack

Cap, Plug, 12/13mm, Santoprene, for Vacuum and Test Tubes, BLUE, 1000/Pack

Cap, Plug, 12/13mm, Santoprene, for Vacuum and Test Tubes, GREEN, 1000/Pack

Cap, Plug, 12/13mm, Santoprene, for Vacuum and Test Tubes, BLACK, 1000/Pack

Cap, Plug, 12/13mm, Santoprene, for Vacuum and Test Tubes, LAVENDER, 1000/Pack

Cap, Plug, 12/13mm, Santoprene, for Vacuum and Test Tubes, RED, 1000/Pack

Cap, Plug, 12/13mm, Santoprene, for Vacuum and Test Tubes, WHITE, 1000/Pack

Cap, Plug, 12/13mm, Santoprene, for Vacuum and Test Tubes, YELLOW, 1000/Pack

Cap, Plug, 16mm, Santoprene, for Vacuum and Test Tubes, GRAY, 1000/Pack

Cap, Plug, 16mm, Santoprene, for Vacuum and Test Tubes, BLUE, 1000/Pack

Cap, Plug, 16mm, Santoprene, for Vacuum and Test Tubes, GREEN, 1000/Pack

Cap, Plug, 16mm, Santoprene, for Vacuum and Test Tubes, BLACK, 1000/Pack

Cap, Plug, 16mm, Santoprene, for Vacuum and Test Tubes, LAVENDER, 1000/Pack

Cap, Plug, 16mm, Santoprene, for Vacuum and Test Tubes, RED, 1000/Pack

Cap, Plug, 16mm, Santoprene, for Vacuum and Test Tubes, WHITE, 1000/Pack

Cap, Plug, 16mm, Santoprene, for Vacuum and Test Tubes, YELLOW, 1000/Pack

Pipettors Accessories

<h2 dir="ltr"> What Are Pipettor Accessories?</h2>
 Pipettor accessories are complementary tools and parts that support correct storage, calibration, maintenance, and identification of laboratory pipettors. Pipettors stored lying flat on a benchtop risk contaminating the nose cone and suffer tip ejector wear; vertical stand storage is the manufacturer-recommended practice for all brands. At a minimum, every lab needs a pipette stand to prevent bench contamination and a calibration tool to verify ISO 8655 accuracy without sending instruments out.
&nbsp;
<h2 dir="ltr">What you will find:</h2>
&nbsp;
<ul>
<li dir="ltr" aria-level="1">
Pipette stands for secure pipettor storage
</li>
<li dir="ltr" aria-level="1">
Carousel pipette holders for easy multi-instrument access
</li>
<li dir="ltr" aria-level="1">
Pipettor calibration tools for accuracy checks
</li>
<li dir="ltr" aria-level="1">
Pipette tip racks and refill systems
</li>
<li dir="ltr" aria-level="1">
Pipette filter replacement accessories
</li>
<li dir="ltr" aria-level="1">
Pipettor cleaning and maintenance tools
</li>
<li dir="ltr" aria-level="1">
Pipette workstation organizers
</li>
</ul>
<h2 dir="ltr"> Key Pipettor Accessory Categories</h2>
 Pipette Stands and Carousel Racks Single-position vertical stands store one pipette upright, protecting the nose cone from surface contact. Six-position carousel stands rotate 360&deg; and hold 6 pipettors of mixed sizes &mdash; the standard for a molecular biology bench set covering P2, P10, P20, P200, P1000, and P5000. Universal-format carousels (Eppendorf, Gilson, Rainin, Biohit, Thermo) accommodate most standard pipette body diameters; manufacturer-specific stands provide a precision fit. Wall-mount holder systems save bench space in smaller workspaces. In-Lab Calibration Tools Gravimetric calibration of a pipettor requires only a calibrated analytical balance (0.0001 g resolution), distilled water, and a calibration tool specific to the pipettor model for adjusting the piston stop. Manufacturer calibration kits (e.g., Gilson Pipetman Calibration Kit, Eppendorf calibration tool) allow in-lab ISO 8655 verification without sending pipettors to an external service. ISO 17025-accredited external calibration services (Gilson, Eppendorf, Rainin) issue certified calibration reports for GLP and regulatory compliance. O-Ring and Seal Service Kits Worn O-rings and seals are the most common cause of pipettor inaccuracy and tip leakage after physical damage. Service kits specific to each pipettor model (Gilson PIPETMAN service kit, Eppendorf Research Plus service kit) include O-rings, seals, and small springs for routine preventive maintenance. Gilson recommends preventive maintenance every 1&ndash;2 years or whenever calibration verification fails. Colour-Coding Rings Colour-coded silicone rings clip onto pipette barrels for quick volume identification, user assignment, or pre/post-PCR segregation in shared labs. Eppendorf ColorTag rings are available in 12 colours and 6 sizes compatible with all Eppendorf pipette models; universal-format rings fit most major brands. Charger Stands for Electronic Pipettors Electronic pipettors (Eppendorf Research Pro, Rainin Pipet-Lite XLS+) require charger stands or base docks for overnight charging. Charger stands also serve as storage; the Eppendorf Charger Stand 2 holds and charges a single electronic model on the bench. 
<h2 dir="ltr"> Specifications Context</h2>
 Pipettor stands should be used per all major manufacturer guidelines &mdash; Eppendorf, Gilson, and Rainin all specify vertical storage as the correct position to prevent liquid ingress into the piston. ISO 8655 calibration requires distilled water at 20&deg;C, a balance with 0.0001 g resolution, and a minimum of 10 dispenses per volume setting. Eppendorf ColorTag rings are available in 6 sizes covering pipettes from 2 &micro;L to 5,000 &micro;L.&nbsp; Eppendorf, Gilson, and Rainin offer both in-lab calibration tools and ISO 17025-certified external calibration services.&nbsp; 
Is your workstation as organized as your research? Don&rsquo;t wait for a pipette to fall or a seal to fail. <a href="https://mbpinc.net/contact-us" style="color: #236fa1;">Connect with the MBP team</a> today to stock up on the essentials that keep your lab running like clockwork.

Pipettor Accessories

Pipette Carousel Stand, 6-Place, for Diamond Apex Pipettes

3358 by Globe Scientific: 6-place rotating acrylic carousel pipette stand for Diamond, Diamond Pro, Diamond Apex, and Diamond PosiStop pipettors. 360° rotation for bench access, chemical-resistant acrylic construction, compact footprint for biosafety cabinets and bench use.

Pipette Carousel Stand, 6-Place, for Diamond PosiStop Pipettes

The 3368 by Globe Scientific is a 6-place rotating carousel stand for Diamond PosiStop and Diamond Advance pipettors, providing 360° benchtop access to up to six pipettors with tips elevated off the work surface. Made from acrylic, the stand keeps organized sets of color-coded Diamond PosiStop pipettors readily accessible during multi-volume workflows.

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