Brands

<h2 data-section-id="17lohz5" data-start="0" data-end="48">What Are Externally Threaded Cryogenic Vials?</h2>
&nbsp;
Externally threaded cryogenic vials have the screw thread on the outside of the vial neck, with a cap that covers the entire top portion of the vial when closed. Manufactured from cryogenic-grade virgin polypropylene, these vials are designed to withstand temperatures from &minus;196&deg;C to +121&deg;C and are commonly used for long-term storage of cell lines, serum, blood, DNA, RNA, bacterial cultures, and other biological samples. Available in volumes ranging from 1.2 mL to 5 mL, they are offered in both self-standing and round-bottom formats. Unlike internally threaded vials, external-thread designs use an integrated sealing system rather than a separate O-ring, helping reduce handling issues. For automated decapping systems, high-throughput biobanking, and SBS-format robotic workflows, externally threaded vials are the preferred format.
&nbsp;
<h2 dir="ltr">MBP Offers:</h2>
&nbsp;
<ul>
<li dir="ltr" aria-level="1">
2D Barcoded Cryogenic Vials for automated tracking
</li>
<li dir="ltr" aria-level="1">
SBS Format Cryo Racks for robotic integration
</li>
<li dir="ltr" aria-level="1">
3D Barcoded Storage Vials for digital inventory
</li>
<li dir="ltr" aria-level="1">
Color-coded Cap Inserts for rapid identification
</li>
<li dir="ltr" aria-level="1">
Self-standing Star-foot Cryo Vials
</li>
<li dir="ltr" aria-level="1">
Silicone O-ring Sealed Leak-proof Containers
</li>
<li dir="ltr" aria-level="1">
Gamma-sterilized Aseptic Storage Tubes
</li>
</ul>
&nbsp;
<h2 data-section-id="px7lzo" data-start="891" data-end="943">How to Choose Externally Threaded Cryogenic Vials</h2>
&nbsp;
Volume
The 2 mL externally threaded vial is the industry standard for cell banking, serum aliquots, and general biospecimen storage. It fits standard 81-well cryo boxes and is suitable for most laboratory applications. Smaller 1.2&ndash;1.5 mL vials are ideal for high-density storage where space efficiency is important, while larger 3&ndash;5 mL formats are commonly used for tissue samples, bacterial glycerol stocks, and larger-volume specimens.
Base Style: Self-Standing vs. Round Bottom
Self-standing vials feature a star-foot or conical base that allows them to stand upright on laboratory benches without requiring a rack, reducing the risk of spills during handling. Round-bottom vials require rack support but often offer broader compatibility with different storage racks and cryo box configurations.
Barcoding: Plain vs. 2D Barcoded
Standard externally threaded vials include a writable surface for manual labeling and are suitable for small to medium-sized sample collections. For large biobanks and automated sample management systems, 2D barcoded vials provide Data Matrix codes that can be scanned directly into Laboratory Information Management Systems (LIMS), improving traceability and reducing manual data entry errors.
Sterility and Purity
Cryogenic vials intended for cell culture, molecular biology, and clinical research should be gamma sterilized and certified RNase-free, DNase-free, non-pyrogenic, and endotoxin-free. These certifications help protect sample integrity and reduce contamination risks during long-term storage.
&nbsp;
<h2 data-section-id="1jl751w" data-start="3061" data-end="3086">Specifications Context</h2>
&nbsp;
Externally threaded polypropylene cryogenic vials are designed for vapor-phase liquid nitrogen storage and ultra-low temperature freezers. The standard outer diameter of a 2 mL vial is approximately 12.5 mm, making it compatible with most 81-well cryo box formats. Modern external-thread designs use integrated thermoplastic elastomer sealing systems that eliminate the need for separate O-rings, reducing the possibility of seal misalignment or loss during routine handling. As of 2026, externally threaded 2 mL vials with SBS-compatible footprints and 2D barcodes are widely used in large-scale biobanking and sample repository applications.
Your research is priceless. Your storage should be equally reliable. <a href="https://mbpinc.net/contact-us" style="color: #236fa1; text-decoration: underline;">Connect with Molecular Biology Products Inc.</a> for a personalized quote.

Externally Threaded Cryogenic Vials

Vial Specifications

CRYOKING SBS 2.0ML EXTERNAL VIALS

CRYOKING SBS 2.0ML EXTERNAL VIALS ；VIAL CAPS COLOR: BIOLOGIX BLUE. CAP SHAPE:ROUND DOME-SHAPE, FIT FOR BROOKS MACHINE,BARCODE: COLOR INJECTION MOLDING TECHNIQUE; LASER-ETCHED 4 CODES, STERILE. RNASE& DNASE FREE, NON-PRYOGENIC,WORKING TEMPERATURE : -196 ℃--120 ℃，FIT FOR 6*8 FORMAT, 48VIALS/BAG ,10 BAGS/PACK , 2 PACKS/CASE

CRYOKING SBS 2.0ML EXTERNAL VIALS ；VIAL CAPS COLOR: SKY BLUE; CAP SHAPE:ROUND DOME-SHAPE, FIT FOR BROOKS MACHINE,BARCODE: COLOR INJECTION MOLDING TECHNIQUE; LASER-ETCHED 4 CODES, STERILE. RNASE& DNASE FREE, NON-PRYOGENIC,WORKING TEMPERATURE : -196 ℃--120 ℃，FIT FOR 6*8 FORMAT, 48VIALS/BAG ,10 BAGS/PACK , 2 PACKS/CASE

CRYOKING SBS 2.0ML EXTERNAL VIALS ；VIAL CAPS COLOR: LIME GREEN; CAP SHAPE:ROUND DOME-SHAPE, FIT FOR BROOKS MACHINE,BARCODE: COLOR INJECTION MOLDING TECHNIQUE; LASER-ETCHED 4 CODES, STERILE. RNASE& DNASE FREE, NON-PRYOGENIC,WORKING TEMPERATURE : -196 ℃--120 ℃，FIT FOR 6*8 FORMAT, 48VIALS/BAG ,10 BAGS/PACK , 2 PACKS/CASE

CRYOKING SBS 2.0ML EXTERNAL VIALS ；VIAL CAPS COLOR: LAVENDER PURPLE. CAP SHAPE:ROUND DOME-SHAPE, FIT FOR BROOKS MACHINE,BARCODE: COLOR INJECTION MOLDING TECHNIQUE; LASER-ETCHED 4 CODES, STERILE. RNASE& DNASE FREE, NON-PRYOGENIC,WORKING TEMPERATURE : -196 ℃--120 ℃，FIT FOR 6*8 FORMAT, 48VIALS/BAG ,10 BAGS/PACK , 2 PACKS/CASE

CRYOKING SBS 2.0ML EXTERNAL VIALS ；VIAL CAPS COLOR: BIOLOGIX BLUE. CAP SHAPE: F-SHAPE, FIT FOR MICRONIC MACHINE,BARCODE:COLOR INJECTION MOLDING TECHNIQUE; LASER-ETCHED 4 CODES, STERILE. RNASE& DNASE FREE, NON-PRYOGENIC,WORKING TEMPERATURE : -196 ℃--120 ℃，FIT FOR 6*8 FORMAT, 48VIALS/BAG ,10 BAGS/PACK , 2 PACKS/CASE

CRYOKING SBS 2.0ML EXTERNAL VIALS ；VIAL CAPS COLOR: SKY BLUE;. CAP SHAPE: F-SHAPE, FIT FOR MICRONIC MACHINE,BARCODE:COLOR INJECTION MOLDING TECHNIQUE; LASER-ETCHED 4 CODES, STERILE. RNASE& DNASE FREE, NON-PRYOGENIC,WORKING TEMPERATURE : -196 ℃--120 ℃，FIT FOR 6*8 FORMAT, 48VIALS/BAG ,10 BAGS/PACK , 2 PACKS/CASE

CRYOKING SBS 2.0ML EXTERNAL VIALS ；VIAL CAPS COLOR:LIME GREEN;. CAP SHAPE: F-SHAPE, FIT FOR MICRONIC MACHINE,BARCODE:COLOR INJECTION MOLDING TECHNIQUE; LASER-ETCHED 4 CODES, STERILE. RNASE& DNASE FREE, NON-PRYOGENIC,WORKING TEMPERATURE : -196 ℃--120 ℃，FIT FOR 6*8 FORMAT, 48VIALS/BAG ,10 BAGS/PACK , 2 PACKS/CASE

CRYOKING SBS 2.0ML EXTERNAL VIALS ；VIAL CAPS COLOR: LAVENDER PURPLE. CAP SHAPE: F-SHAPE, FIT FOR MICRONIC MACHINE,BARCODE:COLOR INJECTION MOLDING TECHNIQUE; LASER-ETCHED 4 CODES, STERILE. RNASE& DNASE FREE, NON-PRYOGENIC,WORKING TEMPERATURE : -196 ℃--120 ℃，FIT FOR 6*8 FORMAT, 48VIALS/BAG ,10 BAGS/PACK , 2 PACKS/CASE

CRYOKING SBS 5.0ML EXTERNAL VIALS

CRYOKING SBS 5.0ML EXTERNAL VIALS ；VIAL CAPS COLOR: BIOLOGIX BLUE;  CAP SHAPE:ROUND DOME-SHAPE, FIT FOR BROOKS MACHINE,BARCODE: COLOR INJECTION MOLDING TECHNIQUE; LASER-ETCHED 4 CODES, STERILE. RNASE& DNASE FREE, NON-PRYOGENIC,WORKING TEMPERATURE : -196 ℃--120 ℃，FIT FOR 6*8 FORMAT, 48VIALS/BAG ,10 BAGS/PACK , 2 PACKS/CASE

CRYOKING SBS 5.0ML EXTERNAL VIALS ；VIAL CAPS COLOR:SKY BLUE;  CAP SHAPE:ROUND DOME-SHAPE, FIT FOR BROOKS MACHINE,BARCODE: COLOR INJECTION MOLDING TECHNIQUE; LASER-ETCHED 4 CODES, STERILE. RNASE& DNASE FREE, NON-PRYOGENIC,WORKING TEMPERATURE : -196 ℃--120 ℃，FIT FOR 6*8 FORMAT, 48VIALS/BAG ,10 BAGS/PACK , 2 PACKS/CASE

CRYOKING SBS 5.0ML EXTERNAL VIALS ；VIAL CAPS COLOR: LIME GREEN;CAP SHAPE:ROUND DOME-SHAPE, FIT FOR BROOKS MACHINE,BARCODE: COLOR INJECTION MOLDING TECHNIQUE; LASER-ETCHED 4 CODES, STERILE. RNASE& DNASE FREE, NON-PRYOGENIC,WORKING TEMPERATURE : -196 ℃--120 ℃，FIT FOR 6*8 FORMAT, 48VIALS/BAG ,10 BAGS/PACK , 2 PACKS/CASE

CRYOKING SBS 5.0ML EXTERNAL VIALS ；VIAL CAPS COLOR: LAVENDER PURPLE. CAP SHAPE:ROUND DOME-SHAPE, FIT FOR BROOKS MACHINE,BARCODE: COLOR INJECTION MOLDING TECHNIQUE; LASER-ETCHED 4 CODES, STERILE. RNASE& DNASE FREE, NON-PRYOGENIC,WORKING TEMPERATURE : -196 ℃--120 ℃，FIT FOR 6*8 FORMAT, 48VIALS/BAG ,10 BAGS/PACK , 2 PACKS/CASE

CRYOKING SBS 5.0ML EXTERNAL VIALS ；VIAL CAPS COLOR: BIOLOGIX BLUE. CAP SHAPE: F-SHAPE, FIT FOR MICRONIC MACHINE,BARCODE: COLOR INJECTION MOLDING TECHNIQUE; LASER-ETCHED 4 CODES, STERILE. RNASE& DNASE FREE, NON-PRYOGENIC,WORKING TEMPERATURE : -196 ℃--120 ℃，FIT FOR 6*8 FORMAT, 48VIALS/BAG ,10 BAGS/PACK , 2 PACKS/CASE

CRYOKING SBS 5.0ML EXTERNAL VIALS ；VIAL CAPS COLOR:SKY BLUE;  CAP SHAPE: F-SHAPE, FIT FOR MICRONIC MACHINE,BARCODE: COLOR INJECTION MOLDING TECHNIQUE; LASER-ETCHED 4 CODES, STERILE. RNASE& DNASE FREE, NON-PRYOGENIC,WORKING TEMPERATURE : -196 ℃--120 ℃，FIT FOR 6*8 FORMAT, 48VIALS/BAG ,10 BAGS/PACK , 2 PACKS/CASE

CRYOKING SBS 5.0ML EXTERNAL VIALS ；VIAL CAPS COLOR: LIME GREEN; CAP SHAPE: F-SHAPE, FIT FOR MICRONIC MACHINE,BARCODE: COLOR INJECTION MOLDING TECHNIQUE; LASER-ETCHED 4 CODES, STERILE. RNASE& DNASE FREE, NON-PRYOGENIC,WORKING TEMPERATURE : -196 ℃--120 ℃，FIT FOR 6*8 FORMAT, 48VIALS/BAG ,10 BAGS/PACK , 2 PACKS/CASE

CRYOKING SBS 5.0ML EXTERNAL VIALS ；VIAL CAPS COLOR: LAVENDER PURPLE. CAP SHAPE: F-SHAPE, FIT FOR MICRONIC MACHINE,BARCODE: COLOR INJECTION MOLDING TECHNIQUE; LASER-ETCHED 4 CODES, STERILE. RNASE& DNASE FREE, NON-PRYOGENIC,WORKING TEMPERATURE : -196 ℃--120 ℃，FIT FOR 6*8 FORMAT, 48VIALS/BAG ,10 BAGS/PACK , 2 PACKS/CASE

<h2>What are bisulfite conversion reagents and buffers?</h2>
&nbsp;
Bisulfite conversion reagents include sodium bisulfite solution, denaturation and conversion buffers, and complete kits that bundle all components needed for the three-step chemical reaction: sulfonation of cytosine to a cytosine-bisulfite derivative, hydrolytic deamination to a uracil-bisulfite derivative, and alkali desulfonation to yield uracil. This process converts unmethylated cytosines to uracil while leaving 5-methylcytosine intact and unconverted, because 5-methylcytosine resists bisulfite-mediated deamination under standard conditions.
&nbsp;
<h2 dir="ltr">What you will find:</h2>
&nbsp;
<ul>
<li dir="ltr" role="presentation">RNA and DNA conversion reagents for enhanced modification of cytosine in methylation workflows</li>
<li dir="ltr" role="presentation">Desulphonation buffers for stabilization of nucleic acids and post-conversion cleanup&nbsp;</li>
<li dir="ltr" role="presentation">Binding buffers used during purification for efficient capture of converted RNA and DNA</li>
<li dir="ltr" role="presentation">Wash buffers for the removal of inhibitors and improved purity of samples</li>
<li dir="ltr" role="presentation">Elution buffers for high-quality recovery of converted nucleic acids</li>
<li dir="ltr" role="presentation">DNA denaturing and digestion buffers for controlled workflow and optimized conversion efficiency</li>
<li dir="ltr" role="presentation">Dilution and reaction buffers for maintaining stable assay conditions</li>
<li dir="ltr" role="presentation">Solubilization and dissolution buffers for sample processing and preparation&nbsp;</li>
<li dir="ltr" role="presentation">Lightning conversion reagents for efficient and rapid methylation analysis workflows</li>
</ul>
&nbsp;
<h2>How to use bisulfite conversion reagents</h2>
&nbsp;
Ensure complete DNA denaturation before conversion to avoid incomplete conversion
Bisulfite only acts on cytosines in single-stranded DNA, so complete denaturation of the input DNA is the most critical first step, since failure to fully denature can leave double-stranded regions in which cytosines are shielded from the bisulfite reagent and remain unconverted.
Understand that incomplete conversion produces false-positive methylation results
If the conversion is incomplete, unconverted unmethylated cytosines will read as cytosine after sequencing, which will be incorrectly interpreted as methylated cytosine, artificially inflating the apparent methylation level of the sample in a false-positive direction.
Optimize conversion conditions to balance completeness against DNA degradation
The harsh conditions needed for complete bisulfite conversion, including high bisulfite concentration, elevated temperature, and long incubation, also fragment and degrade DNA, and optimizing conditions that achieve high conversion while minimizing degradation is a key technical challenge in bisulfite workflows.
Include an unmethylated conversion control to estimate residual incomplete conversion
Including an unmethylated control DNA, such as lambda phage DNA, in the same conversion reaction provides a readout of how completely unmethylated cytosines were converted, helping quantify residual incomplete conversion rates and account for them in downstream analysis.
Be aware of specific challenges for FFPE and degraded DNA samples
Formalin-fixed, paraffin-embedded tissue DNA is already fragmented before bisulfite treatment, and the additional fragmentation during conversion can result in poor library yields; specific modified protocols and carrier reagents can help reduce further degradation during the conversion step.
&nbsp;
<h2>Specifications context</h2>
&nbsp;
Bisulfite sequencing is widely regarded as the gold standard for DNA methylation analysis due to its high resolution and accuracy at single-base level, but it also introduces specific DNA quality challenges for downstream library preparation and sequencing, particularly for samples already of poor quality like FFPE tissue. As of 2026, enzymatic conversion is increasingly recommended as the preferred alternative to bisulfite conversion specifically because it achieves comparable discrimination between methylated and unmethylated cytosines while minimizing the DNA damage and library complexity loss that harsh bisulfite chemistry introduces.
This category sits within DNA/RNA Methylation under Epigenetics, and for a synthetic, fully methylated positive control to run through the conversion workflow, see dNTPs (Deoxynucleotide Triphosphates). See the full reagents catalog and use Quick Order for recurring orders.
<a href="https://mbpinc.net/contact-us">Contact the expert team</a> at MBP and request a quote today to get high-quality bisulfite conversion reagents for your lab.

Bisulfite Conversion Reagents & Buffers

D5001-1 - MSDS

D5003-1 - MSDS

CT Conversion Reagent

D5001-1 CT Conversion Reagent by Zymo Research — 10 bisulfite conversions; &gt;99% non-methylated C conversion; &gt;99% methylated C protection; input 500&nbsp;pg&ndash;2&nbsp;&micro;g; compatible with EZ DNA Methylation kit series.

Manufacturer

Shipping Condition

Storage Condition

CT Conversion Reagent (1 Tube for 10 Conversions)

CT Conversion Reagent (5 x 10 Rxns.)

CT Conversion Reagent (96 Conversions) (1 Bottle)

Benchtop Recappers

<h2>What Are Benchtop Recappers?</h2>
&nbsp;
Benchtop recappers are compact, motor-driven instruments that automate the opening and sealing of screw-cap or push-cap sample storage tubes in standard rack formats (24-, 48-, and 96-position). They are used in biobanks, clinical sample management laboratories, genomics core facilities, and other environments where large numbers of cryogenic or ambient-storage tubes require repeated capping and decapping. Manual recapping at scale is a leading contributor to repetitive strain injury (RSI) in high-throughput sample preparation workflows.
&nbsp;
<h2>What you will find:</h2>
&nbsp;
<ul>
<li>RFID-enabled racks for reliable sample tracking</li>
<li>SBS-format compatibility for standardized laboratory workflows</li>
<li>Automated capper and decapper functionality for improved efficiency</li>
<li>Secure and consistent tube sealing with CT&trade; caps</li>
<li>Compact benchtop designs that maximize laboratory space</li>
</ul>
&nbsp;
<h2>How to Choose a Benchtop Recapper</h2>
&nbsp;
Throughput Format (24 / 48 / 96)
Select the rack format that matches your primary tube storage system. A 96-position automated device can process a full rack in under 60 seconds, while a semi-automated 8-channel row decapper can complete a single row in under 5 seconds, making it suitable for moderate-throughput laboratories without full-rack automation requirements.
Cap Type Compatibility
Confirm whether your tubes use screw caps or push caps, as each requires a different capping mechanism. Screw-cap recappers apply a preset torque value, typically between 1 and 5 N&middot;cm, and automatically stop when the proper seal is achieved. Push-cap systems rely on controlled vertical force. Multi-format adapters can support several tube brands within a single instrument.
Standalone vs. Integrated Systems
Standalone benchtop recappers are suitable for laboratories without dedicated automation infrastructure, while integrated models connect with Hamilton, Tecan, or Beckman Coulter workstations through SBS-format racks and software interfaces. Laboratories requiring LIMS connectivity and sample traceability should consider systems with built-in 1D and 2D barcode scanning capabilities.
Tube Diameter Range
Most automated recappers support standard collection tubes ranging from 13 to 16 mm in diameter and 75 to 115 mm in height. Verify compatibility with your cryovials or specialty microtubes before purchasing, particularly when using proprietary storage systems.
Maintenance Requirements
Pneumatics-free designs eliminate the need for compressed-air infrastructure and generally reduce maintenance demands. Pneumatic systems may offer high performance but require periodic servicing and access to a laboratory air supply.
&nbsp;
<h2>Specifications Context</h2>
&nbsp;
Rack format (24, 48, or 96 tubes) establishes the maximum throughput of a benchtop recapper. Torque settings must be compatible with the selected tube and cap combination, since excessive torque can crack caps while insufficient torque can lead to evaporation or contamination. SBS-format compliance ensures interoperability with industry-standard racks and automated workflows. As of 2026, many benchtop recappers incorporate IoT-enabled monitoring, barcode integration, and LIMS connectivity to improve sample traceability and reduce manual documentation requirements in high-throughput laboratories.
<a href="https://mbpinc.net/contact-us">Contact the expert team at Molecular Biology Products Inc. (MBP)</a> today to find the right benchtop recapper for your laboratory workflow.

CapTrack™  - Brochure

CapTrack from Globe Scientific

CT™ Caps for CapTrack

CT-CAP by Globe Scientific are 13mm O.D. flange plug caps for the CapTrack CT1 automated recapping system, sold 1,000 caps per bag. Precision-engineered to tight tolerances for superior leak resistance, they are available in assorted colors (CT-CAP) or nine individual colors for color-coded sample management. Order online from MBP at mbpinc.net/quickorder using catalog number CT-CAP.

Manufacture

CT Cap, Flange Plug Cap in Assorted Colors for CT1 Model, 13mm, 1000/Bag

CT Cap, Flange Plug Cap for CT2 and CR1 Models, 13mm, Blue, 1000/Bag

CT Cap, Flange Plug Cap for CT2 and CR1 Models, 13mm, Green, 1000/Bag

CT Cap, Flange Plug Cap for CT2 and CR1 Models, 13mm, Black, 1000/Bag

CT Cap, Flange Plug Cap for CT2 and CR1 Models, 13mm, Lavender, 1000/Bag

CT Cap, Flange Plug Cap for CT2 and CR1 Models, 13mm, Orange, 1000/Bag

CT Cap, Flange Plug Cap for CT2 and CR1 Models, 13mm, Red, 1000/Bag

CT Cap, Flange Plug Cap for CT2 and CR1 Models, 13mm, White, 1000/Bag

CT Cap, Flange Plug Cap for CT2 and CR1 Models, 13mm, Yellow, 1000/Bag

CT Cap, Flange Plug Cap for CT2 and CR1 Models, 13mm, Clear, 1000/Bag

Microplate Reader Accessories

<h2>What Are Microplate Reader Accessories?</h2>
&nbsp;
Microplate reader accessories are supplementary components that extend detection range, maintain instrument performance, and support compliance in regulated workflows. They fall into four groups: optical accessories (filters, filter cubes, and polarizers for wavelength selection in fluorescence and absorbance detection); illumination accessories (replacement xenon flash lamps, deuterium lamps, or LED upgrade modules that provide the excitation light source); calibration and validation tools (absorbance validation plates with certified reference values, fluorescence uniformity plates, and luminescence performance standards used to verify reader performance); and automation and software accessories (reagent injectors for kinetic luminescence assays, plate stackers for unattended batch reading, and software module licenses for 21 CFR Part 11 compliance, spectral scanning, or advanced kinetics). Because accessory designs are manufacturer-specific, a filter block designed for one plate reader brand will not fit another; always order accessories using the instrument's model number as the primary specification parameter. Filter sets are the most commonly needed accessory for multi-mode readers; confirm the filter block format and thread size for your specific reader model before ordering, as filter cube dimensions vary significantly between manufacturers and generations.
&nbsp;
<h2 dir="ltr">What you will find: </h2>
<ul>
<li data-section-id="23xybn" data-start="25" data-end="117">Replacement filters and optical accessories for maintaining microplate reader performance.</li>
<li data-section-id="71w1ic" data-start="118" data-end="209">Calibration and validation tools to support accurate and reproducible assay measurements.</li>
<li data-section-id="6jcbpl" data-start="210" data-end="312">Microplates and consumables compatible with absorbance, fluorescence, and luminescence applications.</li>
<li data-section-id="y9aam2" data-start="313" data-end="396">Replacement components and maintenance accessories for routine instrument upkeep.</li>
<li data-section-id="qoq7y7" data-start="397" data-end="523" data-is-last-node="">Accessories designed to support ELISA, cell-based assays, nucleic acid quantification, and other microplate-based workflows.</li>
</ul>
&nbsp;
<h2>How to Choose Microplate Reader Accessories</h2>
&nbsp;
Filter sets for fluorescence and absorbance.
Fluorescence filter sets (excitation filter, dichroic mirror, emission filter) must match both the fluorophore's excitation and emission spectra and the filter cube housing format of the specific reader. Most microplate reader filters use standard 25 mm diameter circular filters; some readers use 12 mm micro-filters. Common fluorescence filter sets: FITC/SYBR Green (Ex 485/12 nm, Em 520/10 nm); DAPI/Hoechst (Ex 360/40 nm, Em 460/40 nm); TRITC/PI (Ex 544/10 nm, Em 620/10 nm); Cy5 (Ex 620/10 nm, Em 680/10 nm). For absorbance, filter-based readers require individual narrow-bandpass filters at the wavelengths required by each assay protocol: 450 nm for ELISA, 595 nm for Bradford, 562 nm for BCA, 260 nm, and 280 nm for nucleic acid and protein.
Replacement lamps
Xenon flash lamps are the standard excitation source in high-quality fluorescence and absorbance microplate readers; typical lamp lifetime is 500 million flashes (approximately 3 to 5 years of daily use). Lamp output decreases gradually before failure; rising CV% in repeated measurements of the same standard is the first sign of lamp degradation. Replacement xenon flash lamps are model-specific; confirm part number from the instrument manual before ordering. Some instrument manufacturers have transitioned to LED-based excitation sources, which have much longer lifetimes (50,000+ hours) and do not require routine lamp replacement.
Calibration and validation plates
Calibration plates contain certified optical standards (neutral density filters, fluorescent reference dyes at known concentrations, or luminescent reference materials) in an SBS-format plate footprint for installation in the plate carriage. They are used to verify photometric accuracy, linearity, and inter-well uniformity (CV% across all 96 or 384 wells). These verifications are required in ISO 17025 accredited labs and GLP/GMP environments, and recommended as best practice for any lab relying on quantitative plate reader data. Validation plates are model-specific and must be re-certified periodically (typically annually) by the manufacturer.
Reagent injectors
Reagent injectors are syringe-pump accessories that dispense a defined volume of reagent into each well of a microplate immediately before or during reading, required for luminescence kinetic assays (luciferase, beta-galactosidase, flash luminescence from coelenterazine), where the signal decays rapidly after reagent addition. Single injectors add one reagent (e.g., luciferase substrate); dual injectors allow sequential addition of two reagents for sequential flash and glow luminescence detection. Injectors are model-specific and must be installed and calibrated by the manufacturer or a qualified service engineer.
Plate stackers and automation accessories
Plate stacker modules load and unload microplates automatically from a tray of 10 to 50 plates, allowing unattended overnight batch reading. Integration with laboratory robotics and LIMS extends this to fully automated plate reading workflows. Plate stackers are model-specific and typically sold as separate accessories from the reader. Confirm that the plate stacker is compatible with the specific plate type (96-well standard, 384-well, with or without sealing film) and the plate loading orientation.
&nbsp;
<h2>Specifications Context</h2>
&nbsp;
Filter bandpass width (the FWHM of the filter transmission curve) affects sensitivity and selectivity. Narrower bandpass filters (10 nm FWHM) improve selectivity by excluding off-target fluorophore emission but transmit less light, reducing signal. Wider bandpass filters (20 to 40 nm) transmit more light for a brighter signal, but may allow bleed-through from closely overlapping fluorophores. In multiplex assays with two or more fluorophores, narrow bandpass emission filters reduce spectral cross-talk between channels. Optical density (OD) of the blocking region outside the transmission band should be at least OD 5 to OD 6 for fluorescence filters to prevent light leakage from the excitation source from reaching the detector.
&nbsp;
To discuss product availability or get selection guidance,&nbsp;<a href="https://mbpinc.net/contact-us">contact the MBP team</a>.

Calibration plate for MR9600 SmartReader 96

The MR9600-CAL by Accuris Instruments is the dedicated calibration plate for the Accuris SmartReader 96 microplate absorbance reader (MR9600 and MR9600-T). It incorporates neutral density filters to verify seven optical performance parameters — including absorbance accuracy, linearity, cross-talk, and IR jamming — supporting in-lab IQ/OQ/PQ programs and GLP documentation without off-site service.

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.

30079A-Group-Cryogenic Vial Brochure

Cap Insert for CryoCLEAR vials

30079A by Globe Scientific is an assorted-color polypropylene cap insert for CryoCLEAR cryogenic vials, supplied as 600 inserts (6 colors &times; 100 per bag). Compatible with both internal and external CryoCLEAR caps, these inserts provide a color-coding system for rapid visual identification of samples in liquid nitrogen and ultra-low temperature cryogenic storage.

Cap Insert for CryoCLEAR vials, Assorted Colors (Blue, Green, Red, Violet, White & Yellow), 100/Bag, 6 Bags/Case

Cap Insert for CryoCLEAR vials, Gray, 1000/Case

Cap Insert for CryoCLEAR vials, Gray, 100/Bag

Cap Insert for CryoCLEAR vials, Blue, 1000/Case

Cap Insert for CryoCLEAR vials, Blue, 100/Bag

Cap Insert for CryoCLEAR vials, Green, 1000/Case

Cap Insert for CryoCLEAR vials, Green, 100/Bag

Cap Insert for CryoCLEAR vials, Orange, 1000/Case

Cap Insert for CryoCLEAR vials, Orange, 100/Bag

Cap Insert for CryoCLEAR vials, Pink, 1000/Case

Cap Insert for CryoCLEAR vials, Pink, 100/Bag

Cap Insert for CryoCLEAR vials, Red, 1000/Case

Cap Insert for CryoCLEAR vials, Red, 100/Bag

Cap Insert for CryoCLEAR vials, Violet, 1000/Case

Cap Insert for CryoCLEAR vials, Violet, 100/Bag

Cap Insert for CryoCLEAR vials, White, 1000/Case

Cap Insert for CryoCLEAR vials, White, 100/Bag

Cap Insert for CryoCLEAR vials, Yellow, 1000/Case

Cap Insert for CryoCLEAR vials, Yellow, 100/Bag

Cap Insert for Cryogenic Vials

611201 by NEST is a white polypropylene cap insert for standard external-thread cryogenic vials, supplied 100/pk, 1,000/case. Fits over the vial body before capping to provide color-coded identification and cap thread protection during cryobox storage. Compatible with external-thread vials only.

Cap Insert for Cryogenic Vial, White, New Model, 100/pk, 1000/cs

Cap Insert for Cryogenic Vial, Red, New Model,100/pk, 1000/cs

Cap Insert for Cryogenic Vial, Yellow, New Model,100/pk, 1000/cs

Cap Insert for Cryogenic Vial, Blue, New Model,100/pk, 1000/cs

Cap Insert for Cryogenic Vial, Green, New Model, 100/pk, 1000/cs

Cap Insert for Cryogenic Vial, Purple, New Model,100/pk, 1000/cs

Flyer

Cap Inserts for Diamond Essentials Cryogenic Vials

Globe Scientific colour-coded virgin polypropylene cap inserts (SKU 3030-CIR) for Diamond® Essentials™ cryogenic vials. DNase-free, RNase-free, pyrogen-free. Rated -196°C to +121°C; leak-proof to 85 kPa. Available in red, blue, yellow, green, and white — 500 inserts per case. Enables visual colour-coded sample organisation without labelling.

Cap Insert for Diamond Essentials Cryogenic Vials, Red, CS/500

Cap Insert for Diamond Essentials Cryogenic Vials, Blue, CS/500

Cap Insert for Diamond Essentials Cryogenic Vials, Yellow, CS/500

Cap Insert for Diamond Essentials Cryogenic Vials, Green, CS/500

Cap Insert for Diamond Essentials Cryogenic Vials, White, CS/500

3033-CIR-Group-RingSeal Cryogenic Vials Brochure

Cap Inserts for RingSeal Cryogenic Vials

The 3033-CIR by Globe Scientific is a red O-ring cap insert for RingSeal Cryogenic Vials, adding color-coded sample identification without replacing the cap or compromising the 90 kPa, –196°C to +121°C cryogenic seal. Certified DNase-free, RNase-free, and Pyrogen-free, the inserts are sold in cases of 500 and are also available in blue (3033-CIB), green (3033-CIG), white (3033-CIW), and yellow (3033-CIY) for multi-category cryogenic sample organization.

Cap Insert for Cryogenic Vials with O-Ring Seal, Red, CS/500

Cap Insert for Cryogenic Vials with O-Ring Seal, Blue, CS/500

Cap Insert for Cryogenic Vials with O-Ring Seal, Yellow, CS/500

Cap Insert for Cryogenic Vials with O-Ring Seal, Green, CS/500

Cap Insert for Cryogenic Vials with O-Ring Seal, White, CS/500

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>

Cap, Snap, 12mm, Dual Position, LDPE, BAG/1000

118120A by Globe Scientific is a 12 mm dual-position LDPE snap cap with a ribbed exterior, designed for both aerobic (loose position) and sealed (leak-resistant position) culture tube applications. The single cap serves both workflow states without cap replacement. Supplied 1,000 per bag; suitable for glass and plastic 12 mm culture tubes in microbiology and clinical lab settings.

Tubes, Caps & Racks Catalog

Lab Supplies for Physicians Offices

Cap, Universal Fit Cap for 12mm, 13mm and 16mm Plastic Tubes

118115A by Globe Scientific is a polyethylene universal snap cap fitting 12 mm, 13 mm, and 16 mm plastic tubes, supplied 1000 caps per bag in 8 colors. A single cap format for multiple tube diameters reduces inventory complexity in labs running blood collection tubes, specimen tubes, and general polystyrene or polypropylene test tubes.