Globe Scientific

Hotplate & Stirrer Accessories

<h2>What Are Hotplate and Stirrer Accessories?</h2>
&nbsp;
Hotplate and stirrer accessories are supplementary components for single-position and multi-position hotplate stirrers that improve temperature accuracy, expand vessel compatibility, enable reflux setups, and maintain equipment in working condition. The most important accessory for research-grade hotplate use is an external temperature probe, which monitors actual solution temperature rather than hotplate surface temperature, which can be 20 to 50 degrees C higher than the liquid in the vessel. PTFE stir bars in standard cylindrical, oval, octagonal, cross-shaped, and polygon geometries allow matching of bar shape to vessel type and mixing requirement. Support rods and clamp assemblies secure condensers, separating funnels, and other glassware above the hotplate for reflux chemistry. Magnetic stir bar retrieval wands recover stir bars from flasks without contaminating the solution. An external temperature probe is the single most impactful hotplate stirrer accessory: without one, you are controlling plate temperature, not solution temperature, and the two can differ by 20 to 50 degrees C.
&nbsp;
<h2 dir="ltr">What You Will Find:</h2>
&nbsp;
<ul>
<li data-section-id="dpsp0x" data-start="25" data-end="139">Temperature sensors for compatible GHS-series hotplate stirrers, available in standard and glass-coated designs.</li>
<li data-section-id="yvvor4" data-start="140" data-end="248">Sensor support stands and clamps for secure positioning of temperature probes during heating applications.</li>
<li data-section-id="hdqu1" data-start="249" data-end="353">Support rods and clamp sets for mounting laboratory apparatus and accessories above hotplate stirrers.</li>
<li data-section-id="rtdv85" data-start="354" data-end="446">Magnetic stir bars, including standard and pivot ring styles, for efficient sample mixing.</li>
<li data-section-id="1hl26tt" data-start="447" data-end="560" data-is-last-node="">Chemically resistant clamp set options featuring inert PTFE construction for demanding laboratory environments.</li>
</ul>
&nbsp;
<h2>How to Choose Hotplate and Stirrer Accessories</h2>
&nbsp;
External temperature probes
Confirm probe type compatibility with the hotplate stirrer model: most digital hotplate stirrers accept either a PT1000 resistance temperature detector (RTD) or a Type K thermocouple, and these are not interchangeable between models. The probe is inserted directly into the solution and feeds temperature data back to the PID controller to maintain the solution (not the plate surface) at the setpoint. Probe length and sheath material (stainless steel, glass, or PTFE) should be matched to the vessel size and chemical compatibility requirements.
PTFE stir bars: geometry and size
PTFE stir bars are available in cylindrical, oval (egg-shaped), octagonal, cross (X-shape), polygon, and ring geometries. Cylindrical bars are the most common general-purpose format. Octagonal bars provide more turbulent mixing in flat-bottomed vessels than cylindrical bars. Cross-shaped bars improve mixing in round-bottom flasks by preventing the bar from riding the wall. Ring or hoop bars are used for mixing around fixed probes or frits inside the vessel. Stir bar length is selected to match vessel diameter, typically 30 to 50% of vessel inner diameter.
Support stands and clamp sets.
Support stands (rod-and-base assemblies) mount above or adjacent to the hotplate to hold condensers, addition funnels, thermometers, and other glassware in reflux setups. Confirm rod diameter compatibility with the clamp set (most lab glassware clamps fit 12.7 mm or 16 mm rods). Weighted bases provide stability for tall assemblies. Crossbar assemblies allow horizontal positioning of clamps at adjustable heights along the support rod.
Magnetic stir bar retrieval tools
Stir bar retrievers are magnetic wands encased in a non-contaminating sleeve (PTFE or glass) that attract and remove the stir bar from a vessel without inserting fingers or metal into the sample. Available as handheld wands or bench-mounted extractors. An essential accessory for labs processing multiple samples per day, as losing track of stir bars is among the most common minor equipment management issues in bench chemistry.
Replacement sensors and calibration weights
Temperature probes degrade after repeated heating cycles or chemical exposure; replace probes showing drift against a calibrated reference thermometer. For hotplate stirrer models with external calibration weights (balance verification), confirm the weight set is OIML or ASTM traceable for regulated workflows.
&nbsp;
<h2>Specifications Context</h2>
&nbsp;
PTFE stir bars should be inspected regularly for chipped or worn PTFE coating. Bare metal exposure from a chipped bar contaminates the sample with metallic particles and alters the bar's magnetic coupling properties, resulting in reduced mixing efficiency or bar stall at lower speeds. Discard and replace any stir bar showing PTFE damage. For regulated lab environments (GMP, ISO 17025), maintain a stir bar inventory log and retire bars on a scheduled basis. External temperature probes rated for immersion in aqueous solutions should be verified against a calibrated reference thermometer at least annually; probes showing more than 1 degree C deviation should be recalibrated or replaced.&nbsp;
&nbsp;
Looking for that one missing piece to complete your setup? Browse our accessories collection and <a href="https://mbpinc.net/contact-us">reach out to the MBP team</a> for a friendly quote today.

Temperature sensor, 230mm length, glass coated, for use with GHS models with heat

GHS-S230G by Globe Scientific is a 230 mm glass-coated temperature sensor for Globe Scientific GHS hotplate stirrer models equipped with heating (GHS-380HS, GHS-380H, GHS-550HS, GHS-550HSP). The glass coating provides chemical resistance for direct immersion in acidic, basic, or corrosive media during heated stirring and synthesis workflows. A non-coated version (GHS-S230) is also available.

Manufacture

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

Test Tube, 11 x 70mm (3mL), PS, BAG/1000

118011 by Globe Scientific is a 3 mL polystyrene test tube, 11×70 mm, supplied in a bag of 1000. Rated to 1500 RPM maximum centrifugation; optically clear polystyrene for visual sample inspection. Fits 11 mm tube racks and is compatible with 11 mm polyethylene plug caps in multiple colors. ISO 9001:2015 certified manufacturer.

Test Tube, 12 x 55mm (3mL), PP, BAG/1000

117041 by Globe Scientific is a 12 × 55 mm, 3 mL polypropylene test tube, non-sterile, in a bag of 1,000. Rated for centrifugation up to 3,000 RPM, autoclavable and freezable. Polypropylene construction resists acids, alkalis, and most solvents — suited for sample prep, dilutions, and immunological assays where PS tube limits are insufficient.

Test Tube, 12 x 55mm (3mL), PS, BAG/1000

Globe Scientific 117011 — 12×55 mm, 3 mL round-bottom rimless polystyrene test tube, rated to 1,500 RPM. Bag of 1,000. Suited for serial dilutions, hemagglutination assays, precipitation tests, and high-volume reagent dispensing.

113010-Tubes, Caps & Racks Catalog

Test Tube, 12 x 86mm (5mL), PS, with Rim, BAG/1000

113010 by Globe Scientific is a 5 mL polystyrene test tube measuring 12 &times; 86 mm with a beaded rim and round bottom, supplied in bags of 1,000. Optical-clarity PS construction allows direct visual inspection of turbidity and pelleting; the rimmed design seats securely in standard 12&ndash;13 mm tube racks and caps. Rated to 1,500 RPM centrifugation; suited for serial dilutions, cell culture, agglutination, and clinical sample staging.

Glass Culture Tubes

<h2 data-section-id="163ce0l" data-start="0" data-end="32">What Are Glass Culture Tubes?</h2>
&nbsp;
Glass culture tubes are cylindrical laboratory vessels used for the cultivation, storage, and handling of biological samples, microbial cultures, and liquid reagents. Available in rimless, stopper-compatible, and screw-cap configurations, these tubes are commonly manufactured from borosilicate glass that meets USP Type I and ASTM E438 Type I Class B specifications. Unlike disposable plastic alternatives, borosilicate glass culture tubes withstand repeated autoclaving, exposure to aggressive chemicals, and routine laboratory sterilization procedures. They remain the preferred choice for reusable microbiology, clinical, and research laboratory applications where durability and chemical resistance are essential.
Choose borosilicate glass culture tubes when your workflow requires sterilization, chemical resistance, or repeated reuse. Choose polystyrene culture tubes for economical, single-use laboratory applications.
&nbsp;
<h2 dir="ltr">What you'll discover:</h2>
&nbsp;
<ul>
<li dir="ltr" role="presentation">High-grade Borosilicate Glass prevents cracking under extreme temperature shifts.</li>
<li dir="ltr" role="presentation">Integrated Tube Dispensers ensure safe, one-handed access and organized storage.</li>
<li dir="ltr" role="presentation">Uniform wall thickness guarantees consistent heating and cooling for every sample.</li>
<li dir="ltr" role="presentation">Available in Borosilicate Glass for high-heat tasks or Polystyrene (PS) for daily lab use.</li>
<li dir="ltr" role="presentation">Perfectly sized 16 x 75mm (8mL) configurations to fit universal laboratory racks.</li>
</ul>
&nbsp;
<h2 data-section-id="8x2xgg" data-start="974" data-end="1010">How to Choose Glass Culture Tubes</h2>
&nbsp;
Material: Borosilicate vs. Polystyrene
Borosilicate glass culture tubes offer excellent thermal and chemical resistance, making them suitable for repeated autoclaving at 121&deg;C and exposure to most laboratory acids and bases. Their low extractable content minimizes contamination and pH changes during sensitive biological and chemical procedures. Polystyrene culture tubes provide excellent optical clarity and are commonly used for routine laboratory assays and serial dilutions, but they are intended for single-use applications and are not suitable for autoclaving.
&nbsp;
Size and Capacity
The most commonly used culture tube sizes are 16 &times; 75 mm with an approximate capacity of 8 mL and 16 &times; 100 mm with an approximate capacity of 12 mL. Smaller formats such as 12 &times; 75 mm and 13 &times; 100 mm are also available for specialized applications. Selection should be based on sample volume requirements, incubation conditions, and compatibility with existing laboratory racks and equipment.
&nbsp;
Rim Style and Cap Compatibility
Rimless culture tubes are designed for use with cotton plugs, foam stoppers, or push-in closures and are widely used in microbiology laboratories. Screw-cap culture tubes provide a more secure seal for specimen transport, long-term storage, and contamination-sensitive applications. Laboratories should verify tube dimensions and rack compatibility before purchasing.
&nbsp;
Quantity and Pack Format
Culture tubes are commonly supplied in bulk quantities ranging from 250 to 1,000 units per case. High-volume laboratories often purchase case quantities to support routine testing, culture preparation, and clinical workflows while simplifying inventory management and purchasing processes.
&nbsp;
<h2 data-section-id="1nunlvq" data-start="2731" data-end="2769">Compare Glass Culture Tube Variants</h2>
&nbsp;
Borosilicate Rimless Culture Tubes These reusable tubes are designed for repeated sterilization and microbiological culture applications. Compatible with cotton plugs and laboratory stoppers, they are commonly used in microbiology, cell culture, and general laboratory procedures where durability and autoclave compatibility are required.
&nbsp;
Borosilicate Screw-Cap Culture Tubes Featuring threaded closures for secure sealing, these tubes are ideal for specimen transport, reagent preparation, and long-term incubation studies. The screw-cap design minimizes contamination risk and reduces evaporation during storage.
&nbsp;
Polystyrene (PS) Culture Tubes Polystyrene tubes provide excellent optical clarity and are intended for single-use laboratory applications such as serial dilutions, colorimetric assays, and ELISA preparation workflows. They offer a lower cost per tube compared with reusable glass alternatives.
&nbsp;
16 &times; 75 mm (Approximately 8 mL) Culture Tubes This compact format is commonly selected for low-volume cultures, blood culture screening, serial dilution procedures, and routine laboratory testing where smaller sample volumes are sufficient.
&nbsp;
16 &times; 100 mm (Approximately 12 mL) Culture Tubes The larger 12 mL format provides additional working volume for microbial enrichment broths, larger reaction mixtures, and culture applications requiring increased sample capacity.
&nbsp;
<h2 data-section-id="1jl751w" data-start="4185" data-end="4210">Specifications Context</h2>
&nbsp;
Borosilicate culture tubes manufactured to ASTM E438 Type I Class B and USP Type I standards provide superior resistance to thermal shock, chemical attack, and contamination compared with standard soda-lime glass. Their uniform wall thickness helps prevent stress fractures during repeated autoclave cycles and temperature changes. Tube dimensions should be matched to laboratory racks, holders, and centrifuge adapters to ensure proper fit and safe operation.
MBP supplies borosilicate and polystyrene culture tube formats in bulk case quantities for research, clinical, and industrial laboratories throughout the United States, Canada, and international markets. Related products include microscope slides, laboratory glassware, and other essential laboratory consumables.
Sick of watching your budget shatter every time a tube hits the floor or the autoclave? Explore our collection today and <a href="https://mbpinc.net/contact-us">hit up our MBP Team</a> for a quick quote.

Group-TDS-119040

Test Tube, 16 x 75mm (8mL), PS

Globe Scientific 16 × 75 mm, 8 mL test tubes in four variants: PS with rim (119010, 2,500/cs), PS no rim (119010A, 500/bag), PP with rim (119040, 2,500/cs), PP no rim (119040A, 500/bag). PS: optical clarity, 1,500 RPM. PP: 3,000 RPM, autoclavable, freezable. Non-sterile.

Test Tube, 16 x 75mm (8mL), PS, with Rim, 2500/Cs

Test Tube, 16 x 75mm (8mL), PS, No Rim, 500/Bag, 2 Bags/Unit

Test Tube, 16 x 75mm (8mL), PP, with Rim, 2500/Cs

Test Tube, 16 x 75mm (8mL), PP, No Rim, 500/Bag, 2 Bags/Unit

110182-110186-Tubes, Caps & Racks Catalog

110182-110186-TDS-110182-110186

Test Tube, 17 x 100mm (15mL), PS, 500/Bag, 2 Bags/Unit

This 17 × 100 mm, 15 mL test tube by Globe Scientific is supplied 1,000 tubes total (500/bag × 2 bags). Available in polystyrene (110182, optically clear) or polypropylene (110186, broader chemical resistance). Standard format for serum separation, agglutination, and clinical chemistry workflows.

Test Tube, 17 x 100mm (15mL), PS, 500/Bag, 2 Bags/Unit, CS/1000

Test Tube, 17 x 100mm (15mL), PP, 500/Bag, 2 Bags/Unit, CS/1000

6150-Group-Tubes, Caps & Racks Catalog

6150-Group-TDS-6148

Test Tube with Attached Blue Screw Cap

Globe Scientific Test Tube with Screw Cap Series: 10 mL polystyrene test tube with attached blue screw cap, 16 × 100 mm, non-sterile, optically clear. 1000 per case. For routine specimen collection, sample storage, and colorimetric assay prep. Order at <a href="https://www.mbpinc.net/quickorder">mbpinc.net/quickorder</a>. Available in seven configurations across 10, 12, 15, and 20 mL volumes in polystyrene (PS) and polypropylene (PP), with attached or separate screw caps in blue or red, sterile or non-sterile, some individually wrapped.

Test Tube with Separate Blue Screw Cap, 16 x 120mm (15mL), PS, 125/Bag, 8 Bags/Unit, CS/1000

Test Tube with Attached Blue Screw Cap, 16 x 100mm (10mL), PS, CS/1000

Test Tube with Attached Red Screw Cap, 16 x 100mm (10mL), PS, STERILE, Individually Wrapped, CS/750

Test Tube with Attached Red Screw Cap, 16 x 120mm (15mL), PS, STERILE, 150/Bag, 5 Bags/Unit, CS/750

Test Tube with Attached Red Screw Cap, 16 x 120mm (15mL), PS, STERILE, Individually Wrapped, CS/500

Test Tube with Attached Blue Screw Cap, 16 x 150mm (20mL), PS, CS/500

Test Tube with Attached Screw Cap, 16 x 100mm (12mL), PP, 250/Pack, 4 Packs/Unit, CS/1000

6148-Group-Tubes, Caps & Racks Catalog

6148-Group-TDS-6148

Test Tube with Attached Red Screw Cap

The Test Tube with Attached Red Screw Cap by Globe Scientific is a 12 &times; 75 mm, 5 mL polypropylene test tube with an attached leak-tight screw cap, available as 6148R (red cap) and 6148W (white cap). Rated to 3,000 RPM, autoclavable, and freezer-compatible, with chemical resistance to acids, alkalies, and solvents. Both ship 250/Bag, 4 Bags/Unit, 1,000 per case.

Test Tube with Attached Red Screw Cap, 12 x 75mm (5mL), PP, 250/Bag, 4 Bags/Unit, CS/1000

Test Tube with Attached White Screw Cap, 12 x 75mm (5mL), PP, 250/Bag, 4 Bags/Unit, CS/1000

Thermal Labels

<h2 dir="ltr">What Are Laboratory Thermal Labels?</h2>
 Laboratory thermal labels are adhesive labels designed for printing by direct-thermal or thermal-transfer desktop label printers &mdash; the two print technologies used for barcode and specimen ID generation in research, clinical, and diagnostic labs. Direct-thermal labels activate a heat-sensitive coating to produce an image without ink or ribbon; thermal-transfer labels use a resin or wax ribbon to fuse ink into the label surface. Thermal labels cover a wide range of container types: cryo vials, microcentrifuge tubes, PCR strips, 15/50 mL conicals, microscope slides, and specimen collection bags. Choose thermal-transfer labels for any sample requiring chemical resistance, temperatures above +50 &deg;C, or long-term barcode legibility; choose direct-thermal for low-cost, short-to-medium-term applications.
&nbsp;
<h2 dir="ltr">What you will find:</h2>
&nbsp;
<ul>
<li dir="ltr" aria-level="1">
Direct thermal labels for quick, ink-free sample identification.
</li>
<li dir="ltr" aria-level="1">
Thermal transfer rolls for high-durability, permanent barcode printing.
</li>
<li dir="ltr" aria-level="1">
Solvent-resistant labels that withstand alcohol and cleaning agents.
</li>
<li dir="ltr" aria-level="1">
Freezer-grade thermal stickers for stable low-temperature archiving.
</li>
<li dir="ltr" aria-level="1">
Perforated label rolls for easy tearing and rapid application.
</li>
<li dir="ltr" aria-level="1">
Various sizes tailored for microtube caps and side-wall labeling.
</li>
</ul>
<h2 dir="ltr"> How to Choose Laboratory Thermal Labels</h2>
 Print Technology Compatibility Confirm whether the printer is direct-thermal (no ribbon required, e.g., Zebra GK420d, DYMO LabelWriter) or thermal-transfer (ribbon required, e.g., Zebra ZT230, Datamax M-Class). The two label types are not interchangeable &mdash; a thermal-transfer label will not print correctly in a direct-thermal printer and vice versa. Temperature and Chemical Exposure Direct-thermal label coatings degrade above approximately 50&ndash;60 &deg;C and with prolonged UV exposure, limiting their use to room-temperature and short-term cold storage applications. Thermal-transfer labels with a resin ribbon produce output resistant to temperatures up to +100 &deg;C, ethanol, xylene, and sanitizing wipes &mdash; required for autoclave tracking, histology, and GLP-regulated sample management. Container and Size Match Label dimensions must match the printable area of the label and the geometry of the container. Common lab thermal label widths are 0.5&ndash;2 inches; lengths are 0.25&ndash;3 inches. Verify dimensions against the container's flat-printable surface, accounting for any wrap-around on curved vials. Roll Core and Printer Compatibility Standard roll cores are 1-inch inner diameter for compact desktop printers; 3-inch cores fit high-volume industrial label printers. Confirm the printer's maximum roll diameter and label width capability before selecting roll format. Material: Paper vs. Polyester Paper-based thermal labels cost less and are suitable for ambient-temperature, short-duration applications (reagent dating, sample intake). Polyester thermal labels are moisture-resistant, more tear-resistant, and rated for demanding environments including freezers and chemical splash &mdash; specified for long-term specimen tracking and any application where label durability is a safety or compliance requirement. 
<h2 dir="ltr"> Specifications Context</h2>
 Direct-thermal label paper weight is typically 58&ndash;80 g/m&sup2;; polyester variants are 50&ndash;100 &micro;m thick. Standard roll dimensions are 2.25 inches &times; 1.25 inches (common for specimen tubes) and 4 inches &times; 6 inches (common for shipping and larger specimen bags). Print resolution for lab barcode labels should be 300 dpi for 1D/2D barcodes on labels smaller than 1 inch &times; 0.5 inch &mdash; 203 dpi produces legible output on larger-format labels.&nbsp;
&nbsp;
Stop struggling with faded barcodes. <a href="https://mbpinc.net/contact-us" style="color: #236fa1;">Ask the MBP Team</a> for a quote right now, we help you make your data permanent.

Thermometer Strips

Globe Scientific self-adhesive liquid crystal thermometer strips, 90–100°F / 32–38°C. For drug testing specimen validity and urinalysis collection. Two pack sizes: BAG/500 (112214) and CS/4000 (112215).

Thermometer Strips, Graduated in both Fahrenheit (90-100°) and Celsius (32-38°), BAG/500

Thermometer Strips, Graduated in both Fahrenheit (90-100°) and Celsius (32-38°), CS/4000

Vacuum Filtration

<h2 dir="ltr">What are Vacuum Bottle-Top Filter Systems?</h2>
 Vacuum bottle-top filter systems are single-use, sterile filtration assemblies consisting of a graduated polystyrene funnel with an integrated membrane filter bonded to a polystyrene receiver bottle, connected by a hose-port adaptor to a house vacuum line or benchtop vacuum pump. The applied negative pressure (&minus;50 to &minus;100 kPa) draws liquid through the membrane into the receiver bottle, which is sealed after filtration for immediate use or cold-room storage.&nbsp;
&nbsp;
<h2 dir="ltr">What you will find:</h2>
&nbsp;
<ul>
<li dir="ltr" aria-level="1">
50mL Vacuum Filtration Units for small-scale sterile sampling
</li>
<li dir="ltr" aria-level="1">
150mL Vacuum Filtration Systems for rapid reagent preparation
</li>
<li dir="ltr" aria-level="1">
250mL Filtration Units for routine buffer sterilization
</li>
<li dir="ltr" aria-level="1">
500mL Vacuum Filtration Cups for mid-scale media processing
</li>
<li dir="ltr" aria-level="1">
1000mL Large Volume Filtration for industrial-scale batching
</li>
<li dir="ltr" aria-level="1">
Sterile Bottle-Top Filters for secure aseptic transfer
</li>
</ul>
<h2 dir="ltr"> How to Choose Vacuum Filtration Systems</h2>
 PES vs. PVDF Membrane for Vacuum Filtration PES membranes provide low protein binding (~1&ndash;2 &micro;g/cm&sup2;), high flow rates, and broad aqueous-solution compatibility &mdash; the standard for routine DMEM, RPMI, HBSS, PBS, and supplement-containing media sterilization. PVDF membranes have slightly lower protein binding than PES and greater chemical resistance to mild organic solvents, mild acids, and alkaline solutions. Use PVDF when filtering protein-rich solutions (FBS, antibody preparations, conditioned medium with high protein content) or when mild organic solvents are present in the filter solution. Volume Selection 250 mL systems (50 mm diameter membrane, 50 mL funnel) suit small media aliquots, supplement solutions, and transfection reagent preparations. 500 mL systems (90 mm diameter membrane, 150 mL funnel) are the routine lab workhorse for standard 500 mL media bottle preparation and FBS filtration. 1,000 mL systems (90 mm diameter membrane, 350 mL funnel) handle full-liter media preparations and large-volume buffer sterilization. All NEST systems include a pre-attached, graduated polystyrene receiver bottle in the corresponding volume. Pore Size: 0.10 &micro;m vs. 0.22 &micro;m vs. 0.45 &micro;m 0.22 &micro;m is the sterilizing grade per USP &lt;1229.2&gt; and ICH Q9: retains all bacteria and fungi; used for routine cell culture media, PBS, and buffer preparation. 0.45 &micro;m is the clarification grade: used as a pre-filtration step before 0.22 &micro;m to remove large particulates from turbid or high-biomass samples (FBS, conditioned media, cell culture supernatants, crude lysates), extending 0.22 &micro;m filter throughput by 3&ndash;5&times; on difficult samples. 0.10 &micro;m is the mycoplasma-removal grade: required when preparing media for Mycoplasma-sensitive primary cell culture or when processing serum or supplementary reagents that may harbor Mycoplasma species. Note that 0.10 &micro;m filtration is substantially slower than 0.22 &micro;m due to the tighter membrane pore structure. Practical Tips for Maximum Throughput Pre-wet the membrane by briefly passing 5&ndash;10 mL of sterile water through before the sample &mdash; this wets the hydrophilic PES or PVDF membrane and reduces initial resistance. For FBS and other viscous solutions, pre-filter through 0.45 &micro;m before the 0.22 &micro;m step. Maintain a vacuum at &minus;50 to &minus;80 kPa; excessive vacuum (&gt; &minus;100 kPa) can shear fragile membrane pores and increase non-specific protein adsorption. Do not autoclave the assembled bottle-top filter &mdash; PES and PS components are not rated for autoclave sterilization. 
<h2 dir="ltr"> Specifications Context</h2>
 NEST Scientific vacuum bottle-top filters are manufactured from polystyrene funnel and receiver bottle components with PES or PVDF membranes. PES membranes have documented low protein binding (~1&ndash;2 &micro;g/cm&sup2;) per NEST scientific USA FAQ. Membrane diameter: 250 mL volume &rarr; 50 mm; 500 mL and 1,000 mL &rarr; 90 mm. The hose connector design accommodates various standard vacuum hose diameters. NEST PES 0.22 &micro;m vacuum filters are described as comparable in performance to leading brands, including Corning Stericup, Thermo Fisher Scientific, and Sartorius, per NEST Scientific USA's product page. All NEST vacuum filters are sterile and non-pyrogenic per the lot certificate. NEST Scientific vacuum bottle-top filters are stocked by MBP in all core SKUs. 
&nbsp;
Because your research should move faster than a slow-dripping filter. <a href="https://mbpinc.net/contact-us" title="Contact the Molecular Biology Products Inc. team" style="color: #236fa1;">Contact the Molecular Biology Products Inc. team</a> for a quote before your deadlines catch up with you.

Flyer

Timer, 4 Channel, Count Up-Count Down

Globe Scientific 4-Channel Lab Timer (SKU 1004) — 4 independent count-up/count-down channels; 6-digit LCD; 99 hr, 59 min, 59 sec range; 70 dB alarm per channel; memory function; time-of-day clock. Powered by 1.5V LR44 battery (included). Dimensions: 2.75 × 2.625 × 1 in.

Tissue Cassettes

<h2 data-section-id="12g32xm" data-start="194" data-end="223">What Are Tissue Cassettes?</h2>
&nbsp;
Tissue cassettes are rectangular acetal polymer (POM) containers used in surgical pathology and research histology to carry gross tissue specimens&mdash;including resections, excisions, and large biopsy cores&mdash;from the grossing table through the complete paraffin processing workflow. Wide-slot perforations (approximately 1.5 mm) allow rapid reagent penetration and drainage during automated tissue processor cycles while preventing specimen loss for samples measuring 3 mm or larger in their smallest dimension. Following processing, the cassette base fits directly into a metal or disposable plastic base mold for paraffin embedding, and the completed paraffin block is archived with the cassette serving as the primary specimen identifier.
Standard tissue cassettes handle the majority of surgical pathology specimens; use biopsy cassettes for specimens smaller than approximately 3 mm.
&nbsp;
<h2 dir="ltr">What You Will Find:</h2>
&nbsp;
<ul>
<li>35&deg; Precision Writing Surface: Ergonomic angle with dual labeling panels for clear marking and smooth printer compatibility.</li>
<li dir="ltr" role="presentation">Snap-Secure Integrated Lids: One-piece lid design ensures a tight, permanent seal to prevent sample loss.</li>
<li dir="ltr" role="presentation">Optimized Fluid Exchange: High-flow pores allow consistent fixation and efficient paraffin infiltration.</li>
<li>Lab-Proven Durability: Solvent-resistant construction prevents warping in xylene or alcohols.</li>
</ul>
&nbsp;
<h2 data-section-id="1jtb3u7" data-start="1122" data-end="1155">How to Choose Tissue Cassettes</h2>
&nbsp;
Writing Area Angle: 30&deg; vs. 35&deg;
Globe Scientific tissue cassettes are available with 30&deg; and 35&deg; angled writing surfaces to match Leica and Sakura cassette printer platen angles. Selecting the incorrect angle can create printing alignment issues and slow workflow efficiency. Laboratories should verify printer specifications before ordering case quantities.
Integral Lid vs. Separate Lid
Integral hinged-lid tissue cassettes snap closed without requiring a separate steel lid, reducing handling steps in high-volume grossing environments. Separate-lid cassettes are compatible with standard metal base molds and are often preferred in embedding stations where lids must be removed independently. Both formats are compatible with standard tissue processor baskets.
Color Coding
Globe Scientific offers tissue cassettes in more than ten standard colors. Many laboratories assign colors by specimen type or department to improve organization and reduce the risk of specimen identification errors during high-volume processing.
Pack Format: Standard Box vs. QuickLoad Sleeves
Standard 500-count dispenser boxes meet the needs of most laboratories. QuickLoad&reg; and E-Z Load&reg; sleeve formats provide pre-counted cassette stacks for rapid one-handed dispensing and are particularly useful in grossing stations processing more than 300 specimens per day.
Compatibility with Tissue Processors
The standard 40 &times; 28 &times; 6 mm cassette footprint is compatible with Leica ASP, Sakura VIP, Thermo Shandon Excelsior, and most other automated tissue processors without modification. Compatibility should be verified when ordering Mega or deep-body cassette variants.
&nbsp;
<h2 data-section-id="1jl751w" data-start="4610" data-end="4635">Specifications Context</h2>
&nbsp;
Acetal polymer cassettes are dimensionally stable from 4&deg;C refrigerated storage through approximately 65&deg;C during paraffin infiltration. Globe Scientific maintains ISO 9001:2015 quality management certification, and lot-specific conformance documentation is available upon request. The standard 40 &times; 28 &times; 6 mm footprint is widely accepted by major tissue processor manufacturers and does not require instrument-specific modification. Tissue cassettes are research-use consumables and are not classified as medical devices or in vitro diagnostic (IVD) products.
Stop worrying about sample loss and switch to the MBP standard. Browse our inventory and&nbsp;<a href="https://mbpinc.net/contact-us" style="color: #236fa1; text-decoration: underline;">hit up the team</a> for a quote today.

Tissue Cassettes with Attached Lids, 30° Writing Area

The Tissue Cassettes with Attached Lids, 30° Writing Area by Globe Scientific are acetal polymer cassettes with snap-lock attached lid and extra-large 30° writing surface for barcode and printer labeling. Available in Aqua (1090A), Blue (1090B), Green (1090G), Pink (1090P), White (1090W), and Yellow (1090Y). 500/dispenser box, 2 boxes/unit.