Brands

<h2>What are heated laboratory presses?</h2>
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Heated laboratory presses are press instruments in which one or both press platens are heated to a set temperature, allowing materials to be compressed under conditions of simultaneous heat and pressure. Common applications include compression molding of thermoplastic polymers into flat films for spectroscopy, mechanical testing, or barrier property measurement; laminate bonding of polymer layers, films, or membranes under heat; curing of thermoset composite materials; and testing adhesive performance at elevated temperature and defined pressure. The temperature-controlled platens replace the standard cold platens of an ambient press and typically operate from room temperature up to 250&ndash;300&deg;C, with a cooling water circuit option for faster cycle times.
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<h2 data-start="422" data-end="447">What you will find:</h2>
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<ul>
<li>40-Ton Laboratory Pellet Press with Built-in Hydraulic Pump &ndash; High-force press for laboratory pellet preparation</li>
<li>24-Ton Pellet Press with Hydraulic Pump &amp; Safety Shield &ndash; Compact press with added operational safety</li>
<li>250&deg;C Heated Die with Digital Controller &ndash; Controlled heating solution for precision applications</li>
<li>Heat Press with Dual Heating Platens &ndash; Uniform heating and pressing for laboratory workflows</li>
</ul>
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<h2>How to choose a heated press</h2>
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Confirm the maximum platen temperature covers your material's processing temperature
Most common thermoplastics &mdash; polyethylene, polypropylene, PVDF, Nylon, and PEEK &mdash; have processing temperatures between 150&deg;C and 350&deg;C, and the heated press must comfortably exceed the material's processing temperature for adequate softening during molding. A press rated to 250&deg;C is sufficient for most polyolefins and engineering plastics; high-performance polymers like PEEK require higher-temperature platens rated to at least 350&deg;C.
Match platen size to the dimensions of the films or laminates you need to produce
Heated press platens range from small (50 &times; 50 mm or 100 &times; 100 mm) for small sample coupons to larger (200 &times; 200 mm or larger) for bigger films or panels. The sample area must fit within the platen size for even heating and pressure distribution, since areas extending beyond the heated platen zone receive less heat and different pressure.
Evaluate press force capacity against the required molding pressure
Polymer film casting and laminate bonding require lower forces than analytical pellet pressing, but composite processing and some thermoplastic molding benefit from higher forces. Match press force to the specific application rather than selecting arbitrarily high capacity.
Consider cooling circuit options for faster cycle times in production-volume work
Heated presses used for repeated cycling of polymer samples benefit from an integrated cooling water circuit that rapidly cools the platens after pressing, allowing the sample to be quenched to below the polymer's crystallization temperature before removal and reducing the total cycle time per sample.
Confirm temperature uniformity and control accuracy
Temperature uniformity across the platen surface is critical for films and laminates with consistent thickness, since cooler platen edge regions produce uneven material. Good heated presses specify uniformity within &plusmn;2&ndash;5&deg;C across the platen at operating temperature.
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<h2>Specifications context</h2>
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Polymer film preparation for FTIR characterization, tensile testing, or barrier property measurement requires films of uniform thickness across the entire sample area, and temperature non-uniformity in the heated press platens is one of the primary causes of film thickness variation. Carver-style laboratory heated presses with electrically heated platens and embedded thermocouples for feedback control represent the standard heated press design in polymer science laboratories. As of 2026, heated presses with integrated cooling circuits and PID temperature controllers for precise thermal cycling remain the standard for polymer science and composite material research.
Need help selecting the right system? <a href="https://mbpinc.net/contact-us">Reach out to the MBP team</a> for expert support and a custom quote.

Heated Presses

24-Ton Pellet Press with Hydraulic Pump & Safety Shield

MP24A by Across International is a 24-metric-ton (52,910 lb) hydraulic pellet press with a built-in hydraulic pump (auto-return) and a 10 mm thick transparent safety shield. It accommodates 2" ID round die sets for FTIR/KBr pellet preparation, XRF sample prep, catalyst pellet forming, and materials research. Machine weight is 84 lb; working space is 4 × 4 × 5.5 inches.

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Maximum working space

Largest compatible die set

Hydraulic cylinder travel distance

Machine dimension

Machine weight

Shipping weight

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Pressing dies

Manufacture

Columns, Plastics & Accessories

25 ml Reservoir (25 pack)

C1039-25 by Zymo Research — 25-pack of 25 ml reservoirs for use with Spin-Away Filters and Zymo-Spin™ IIICG columns. Collection vessels for nucleic acid purification and plasmid prep workflows. Room temperature storage.

Manufacturer

Shipping Condition

Storage Condition

PETG Square Bottles

<h2 dir="ltr">What are PETG Square Media Bottles?</h2>
 PETG square media bottles are single-use, sterile, square-footprint containers manufactured from glycol-modified polyethylene terephthalate (PETG) for storing tissue culture media, fetal bovine serum, PBS, HBSS, buffers, pharmaceutical intermediates, and pH-sensitive aqueous solutions. The square profile reduces cold-room and refrigerator footprint by approximately 25% compared to equivalent-volume round bottles, and flat sides prevent rolling during transport. PETG square bottles are the correct choice over PET when low-temperature stability to &minus;80 &deg;C is needed, when wall durability under cold-room handling is critical, or when closed-system accessory cap assemblies will be used for aseptic liquid transfer.
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<h2 dir="ltr">What you will find:</h2>
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30mL PETG Bottles &ndash; For micro-scale aliquots and stock sampling.
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60mL PETG Bottles &ndash; Compact size for small-volume buffer storage.
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125mL PETG Bottles &ndash; Standard size for routine media prep.
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250mL PETG Bottles &ndash; Ideal for general cell culture storage.
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500mL PETG Bottles &ndash; Optimized for mid-volume biological fluids.
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1000mL PETG Bottles &ndash; For bulk reagent storage and stock solutions.
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2000mL PETG Bottles &ndash; High-capacity for industrial-scale liquid handling.
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<h2 dir="ltr"> How to Choose PETG Square Media Bottles</h2>
 PETG vs. PET vs. PC PETG and PET are chemically similar but differ in crystallinity. PETG's glycol modification reduces polymer crystallinity, improving impact resistance, flexibility, and low-temperature stability. PETG is rated from &minus;80 &deg;C to +60 &deg;C; PET from &minus;60 &deg;C to +60 &deg;C; PC from &minus;135 &deg;C to +135 &deg;C. PETG and PET are both BPA-free and non-autoclavable. PC is autoclavable but BPA-containing. For low-temperature archival storage of serum, enzymes, and viral stocks below &minus;60 &deg;C, PETG is the appropriate single-use choice. Volume Selection by Application The 30 mL and 60 mL bottles suit single-use serum aliquots, enzyme dilutions, and small-scale media preparation for T25 or T75 flasks. The 125 mL and 250 mL formats cover standard T75 and T175 media changes. The 500 mL bottle aligns with standard FBS lot sizes and 500 mL media kit volumes. The 1,000 mL bottle stores a full 1 L media preparation or 1 L FBS aliquot. Each bottle includes 15% headspace above nominal volume for expansion during freezing and thawing. Graduated Markings: Molded vs. Printed NEST Scientific PETG square bottles feature molded graduations (not printed), which remain legible through repeated freeze-thaw cycles, solvent exposure, and autoclave label-remover use. Printed graduations on competing formats can abrade or smear over time. Molded graduations are an important quality checkpoint when selecting PETG bottles for long-term archival. Cap Design NEST PETG square bottle caps are HDPE, designed through a one-shot mold process without an inner gasket. The gasket-free design eliminates a potential leachable point and produces a tighter, more consistent seal under the torque applied during manual capping in a cold room or gloved biosafety cabinet environment. The external collar design provides a secure grip for easy sealing under gloves. Double-Bagged GMP Packaging NEST PETG square media bottles are available in double-bagged sterile packaging, meeting material entry requirements for GMP cleanrooms and ISO-classified bioprocess areas. Each inner bag is heat-sealed; the outer bag provides additional sterility protection against outer packaging damage during courier transit. Standard Bottle vs. Accessory Assembly For routine media and serum cold storage, standard PETG square bottles with HDPE screw caps are the appropriate, cost-effective format. When closed-system aseptic liquid transfer between containers is required &mdash; cGMP media dispensing, viral stock aliquoting, pharmaceutical intermediate handling &mdash; choose NEST PETG bottles with bi-directional transfer cap assemblies (TPE tubing + Luer lock or CPC connector). 
<h2 dir="ltr"> Specifications Context</h2>
 NEST Scientific PETG square media bottles are manufactured from 100% virgin PETG resin in ISO 8 (Class 10,000) cleanrooms. Both PET and PETG materials meet USP Class VI and USP &lt;661&gt; biocompatibility requirements and ISO 10993 quality system standards per NEST lot certificates. E-beam sterilization achieves SAL 10⁻⁶. Smooth inner surface minimizes liquid residue on the wall. Operating temperature: &minus;80 &deg;C to +60 &deg;C. HDPE cap is heavy-metal-free per regulatory testing. Shelf life: 3 years from production month. As of 2026, NEST Scientific is ISO 9001:2015 and ISO 13485 certified with FDA registration. 
In a field where a single leak can ruin weeks of data, precision is everything. <a href="https://mbpinc.net/contact-us" style="color: #236fa1; text-decoration: underline;">Contact the Molecular Biology Products Inc. team</a> for a quote and ensure your closed-system transfers stay flawless.

DataSheet

Product Literature

250 mL PETG Square Storage Bottle with Bi-directional Transfer Cap

C50921-BBB060A by NEST Scientific is a 250 mL PETG square storage bottle with a bi-directional transfer cap, 60 cm TPE tube (1/4″ ID, 3/8″ OD), Female Luer Lock Connector, and 0.22 µm vent filter (Φ24 mm). BPOG-validated extractables, E-beam sterile, DNase/RNase/pyrogen-free, ISO 13485 and 21 CFR Part 820 compliant. 1/pk, 10/cs.

250mL PETG Square Storage Bottle with Bi-directional Transfer Cap with TPE Tube (60cm 1/4" ID 3/8" OD), Male CPC Connector with Female Sealing Cap, Vent Filter (0.22 μm Φ24mm), Sterile, 1/pk, 10/cs

250mL PETG Square Storage Bottle with Bi-directional Transfer Cap with TPE Tube (60cm 1/4" ID 3/8" OD), Female Luer Lock Connector with Luer Plug, Vent Filter (0.22 μm Φ24mm), Sterile, 1/pk, 10/cs

250mL PETG Square Storage Bottle with Bi-Directional Transfer Cap with TPE Tube (60cm 1/4" ID 7/16" OD), Heat seal ,Vent Filter (0.22 μm 4.5cm²), Sterile, 1/pk, 10/cs

250mL PETG Square Storage Bottle with Bi-directional Transfer Cap with TPE Tube (60cm 1/8" ID 1/4" OD), Male CPC Connector with Female Sealing Cap, Vent Filter (0.22 μm Φ24mm), Sterile, 1/pk, 10/cs

250mL PETG Square Storage Bottle with Bi-directional Transfer Cap with TPE Tube (60cm 1/8" ID 1/4" OD), Female Luer Lock Connector with Luer Plug, Vent Filter (0.22 μm Φ24mm), Sterile, 1/pk, 10/cs

PETG Bottle Accessories

<h2 dir="ltr">What are PETG Bottles with Accessories?</h2>
 PETG bottles with accessories are sterile, closed-system liquid storage and transfer assemblies combining a square PETG (polyethylene terephthalate glycol-modified) media bottle with a bi-directional transfer cap pre-fitted with TPE (thermoplastic elastomer) tubing and a terminal connector &mdash; Luer lock (male or female) or CPC (clamped pressure connector). The closed system allows aseptic media, serum, buffer, or pharmaceutical intermediate transfer between containers without open-pour steps, substantially reducing contamination risk and compliance burden in cGMP-regulated and BSL-2 laboratory environments.&nbsp; Choose PETG bottle assemblies for any liquid transfer workflow requiring an aseptic closed system &mdash; cGMP media dispensing, FBS aliquoting under sterile barrier, viral vector transfer, or pharmaceutical intermediate handling where open-pour steps are prohibited by SOP or regulatory requirement.
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<h2 dir="ltr">What you will find:</h2>
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1/4" ID TPE Tubing Systems with Female Luer Lock connectors
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1/4" ID TPE Tubing Systems with Male CPC connectors
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1/8" ID TPE Tubing Systems for precision fluid transfer
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1/8" ID TPE Tubing Systems with Female Luer Lock connectors
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1/8" ID TPE Tubing Systems with Male CPC connectors
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0.22&mu;m Vent Filter Assemblies for sterile pressure equalization
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Aseptic Transfer Caps with integrated sealing plugs
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Customizable Tubing Sets for closed-loop systems
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<h2 dir="ltr"> How to Choose PETG Bottle Assemblies</h2>
 Connector Type: Luer Lock vs. CPC Female Luer lock connectors (catalog 352503, 352506 series) mate with male Luer tips on syringe filters, tubing sets, and sterile sampling devices &mdash; the most common connector for inline sterile sampling and small-volume aseptic transfer. Male Luer lock connectors fit female Luer receptacles on peristaltic pump tubing and fluid path assemblies. CPC (clamped pressure connector, also called quick-connect) connectors provide a tool-free, dry-disconnect coupling between two fluid lines without dripping &mdash; used in bioreactor harvest lines, media feed assemblies, and bioprocess fluid path management. Tubing Size: 1/8" vs. 1/4" I.D. NEST assemblies are available with 60 cm TPE tubing in 1/8" I.D. &times; 1/4" O.D. (for low-flow, small-volume transfer with syringe or peristaltic pump at low speed) or 1/4" I.D. &times; 3/8" O.D. (for higher-flow transfer with standard peristaltic pumps). The 3/8" O.D. tubing is the standard for most bioprocess peristaltic pumps. Confirm pump head bore size against tubing O.D. before ordering. Bi-Directional vs. Standard Cap The bi-directional transfer cap in NEST PETG assemblies has a dual-port design: one port connects to the TPE transfer tubing (outflow or inflow path), and the cap as a whole seals the bottle neck during the non-transfer state. This design allows the bottle to function both as a source vessel (liquid out via tubing) and a receiver vessel (liquid in via tubing) without changing the cap assembly. Confirm whether your process requires one-way or two-way transfer before selecting the assembly format. Volume Options NEST PETG bottle assemblies are available in 250 mL, 500 mL, and 1,000 mL volumes, matching standard media, sera, and buffer kit sizes. The 250 mL assembly is standard for small-volume cGMP process sampling; 500 mL and 1,000 mL assemblies suit bulk media dispense and FBS aliquoting at scale. Standard Bottle vs. Assembly For applications that do not require tubing or connectors &mdash; routine cold storage of media, FBS thaw, and buffer archiving &mdash; standard NEST PETG square bottles with HDPE screw caps (catalog 352xxx without accessories) are available at a lower cost. The accessory assembly format is only necessary when closed-system transfer between containers is required.
<h2 dir="ltr"> Specifications Context</h2>
 NEST Scientific PETG bottle assemblies are manufactured under a cGMP quality system conforming to ISO 13485 and 21 CFR 820 (QSR). All components are USP Class VI; the complete assembly is gamma irradiated in the USA to SAL 10⁻⁶ and provided in double-bagged sterile packaging for cleanroom entry. Each lot is tested and certified free of endotoxins, pyrogens, DNase, RNase, and particulates. PETG material: USP Class VI, temperature range &minus;80 &deg;C to +60 &deg;C; TPE tubing: USP Class VI, biocompatible, platinum-cured equivalent. The bi-directional cap body is polycarbonate (PC); the tubing and connector are TPE and polypropylene (PP) or nylon, all USP Class VI. As of 2026, NEST PETG bottle assemblies are used in cGMP biopharmaceutical manufacturing, viral vector production (lentivirus, AAV), FBS aliquoting under sterile barrier, and academic cGMP pilot programs. 
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Maintain the highest standards of aseptic integrity with our specialized assemblies. <a href="https://mbpinc.net/contact-us">Reach out to the experts</a> at Molecular Biology Products Inc. for a quote and keep your fluid handling error-free.

PETG Bottle With Accessories

250mL PETG Square Storage Bottle Transfer Cap

NEST Scientific C50921-BBB060B is a sterile 250 mL PETG square storage bottle with a transfer cap, 60 cm TPE tube (1/4″ ID × 3/8″ OD), female Luer lock connector, and 0.22 μm vent filter. BPOG E&L validated. For closed aseptic liquid transfer in pharmaceutical and bioprocess applications. Sterile, 1/pk, 10/cs.

250mL PETG Square Storage Bottle Transfer Cap, TPE Tube (60 cm 1/4" ID 3/8" OD), Male CPC Connector with Female Sealing Cap, Vent Filter (0.22 μm Φ24mm), without Bottle, Sterile, 1/pk, 10/cs

250mL PETG Square Storage Bottle Transfer Cap, TPE Tube (60cm 1/4" ID 3/8" OD), Female Luer Lock Connector with Luer Plug, Vent Filter (0.22 μm Φ24mm), without Bottle, Sterile, 1/pk, 10/cs

250mL PETG Square Storage Bottle Transfer Cap, TPE Tube (60cm 1/8" ID 1/4" OD), Male CPC Connector with Female Sealing Cap, Vent Filter (0.22 μm Φ24mm), without Bottle, Sterile, 1/pk, 10/cs

250mL PETG Square Storage Bottle Transfer Cap, TPE Tube (60cm 1/8" ID 1/4" OD), Female Luer Lock Connector with Luer Plug, Vent Filter (0.22 μm Φ24mm), without Bottle, Sterile, 1/pk, 10/cs

Universal Centrifuge Accessories

<h2>What Are Universal Centrifuge Accessories?</h2>
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Universal centrifuge accessories are the interchangeable components that determine the range of applications a universal centrifuge can perform. These include swing-out rotor buckets for blood tubes, conical tubes, microplates, and large bottles; fixed-angle rotors for high-speed pelleting; hematocrit and cytospin rotors; tube adapters; and aerosol-tight bio-containment lids. Selecting the appropriate accessories allows a single centrifuge to support multiple laboratory workflows efficiently and safely.
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<h2 dir="ltr">What you will find:</h2>
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Tube adapters and inserts for compatibility with multi-volume samples&nbsp;
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Fixed-angle and swing-out rotors for varied centrifugation applications
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Lids and sealed buckets for safe and reliable operations
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PCR adapters and microplate carriers for high-throughput workflows
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Centrifuge tubes, holders, and supporting aids for efficient and complete setups
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<h2>How to Choose Universal Centrifuge Accessories</h2>
&nbsp;
Swing-Out Bucket Selection by Application
Choose swing-out buckets according to the sample formats used in your laboratory. Blood tube buckets support routine clinical applications, conical tube buckets are suitable for cell culture and molecular biology, microplate carriers enable high-throughput workflows, and large-bottle carriers accommodate large-volume sample processing.
Fixed-Angle Rotors
Fixed-angle rotors provide higher centrifugal forces for microtube, PCR tube, and small-volume sample processing. Ensure that both the rotor and centrifuge motor specifications support the required operating speeds and sample formats.
Cytospin Clip Rotors
Cytospin rotors are designed for preparing microscope slides from low-cellularity samples such as body fluids. Verify compatibility with the required funnel sizes and use bio-containment features when processing potentially infectious materials.
Bio-Containment Lids
Aerosol-tight lids help contain biological samples during centrifugation and support safe laboratory practices. Regular inspection of sealing components and O-rings ensures reliable containment and long-term performance.
Reducing Adapter Inserts
Adapter inserts allow smaller tubes to fit securely within larger bucket positions. Using properly matched adapters improves balance, prevents movement during operation, and helps maintain consistent centrifugation results.
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<h2>Specifications Context</h2>
&nbsp;
Modern universal centrifuge systems support interchangeable accessory configurations that enable rapid transitions between clinical, research, cell culture, and cytology workflows. Swing-out buckets, fixed-angle rotors, and microplate carriers provide flexibility while maintaining compatibility with a broad range of vessel formats.
Routine inspection and maintenance of accessories, including adapters, lids, and sealing components, help ensure safe operation and extend equipment lifespan. Advances in bio-containment systems and modular rotor designs continue to improve laboratory efficiency and versatility.
Time to upgrade your universal centrifuge accessories. <a href="https://mbpinc.net/contact-us">Contact the expert team </a>of Molecular Biology Products Inc. (MBP) and the find perfect match today.

250ml bottle insert for 500ml rotor, 2/pk.

The Z446-500-A250F by Hermle is a 250 ml flat-bottom bottle insert for the Z446-04500 4×500 ml fixed-angle rotor on Hermle Z446 / Z446-K centrifuges. Supplied 2 per pack. Enables 250 ml flat-bottom bottles in a 500 ml rotor position at up to 8,000 rpm / 10,367 xg. For conical 250 ml bottles, see Z446-500-A250.

250ml conical bottle insert for Z496-1000-1L 2/pk

Z496-1L-A250F by Hermle is a 2-pack of 250 ml conical bottle inserts for the Hermle Z496-1000-1L rotor on the Hermle Z496 ultra-high-volume floor centrifuge series. The inserts allow 250 ml conical bottle runs in the large 1L bucket positions at up to 4,600 rpm / 5,203 × g.

250ml conical bottle insert, 2/pk

The Z446-750-A250F by Hermle is a 2-pack of 250 ml conical (Falcon-style) bottle inserts for the Z446-750 swing-out rotor on Hermle Z446/Z446-K centrifuges, supporting up to 4 x 250 ml conical bottles per run at 4,000 rpm / 3,434 xg (4,500 rpm / 4,346 xg on Z446-K).

250ml conical insert for 500ml rotor, 2/pk.

Z446-500-A250 by Hermle/Benchmark Scientific is a 250 mL round-bottom flask adapter for the Z446 centrifuge rotor system, enabling 250 mL flask runs on Z446 and Z446-K centrifuges.

250ml flat bottle insert, 2/pk

Z446-750-A250 by Hermle is a 2-pack of flat bottle inserts that convert the 750 ml Hermle Z446-750 swing-out rotor buckets for 250 ml flat-bottom centrifuge bottles, rated to 4,000 RPM and 3,434 × g on the Z446 (4,500 RPM / 4,346 × g on the Z446-K) — order at mbpinc.net/quickorder using catalog number Z446-750-A250.

250ml flat bottle insert, 2/pk.

Z366-250-A250 by Hermle is a pack of 2 flat-bottom 250 ml bottle inserts for use with the Hermle Z366-250-HC High-Capacity Swing-Out Rotor. Compatible with the Z366 and Z366K centrifuge series, these polypropylene inserts support up to 4,500 rpm / 3,735 × g for large-volume cell pelleting, clarification, and density-gradient runs.

250ml insert, 2/pk.

The Z366-250-B250 by Hermle Labortechnik GmbH is a 2-pack of 250 ml inserts for the Z366-250-HC high-capacity swing-out rotor, compatible with Hermle Z366 and Z366-K centrifuges. The inserts enable large-volume cell harvest, biological fluid clarification, and preparative separations in a 250 ml bottle format within the swing-out rotor platform.

250°C Heated Die with Digital Controller Specifications

250°C Heated Die with Digital Controller

A set of hardened steel dry pressing die set for pellet presses, ready for you to make cylinder-shape pellets of different diameters (13mm, 25 mm, 50 mm & 76 mm). Heating system with programmable digital temperature controller allows heating up to 250C.\r\n\r\n