2.0 mL MST™ Cryogenic Conical-Bottom Tubes — PPC, Natural, Non-Sterile (220-3952-080)
These 2.0 mL MST™ cryogenic conical-bottom tubes from Caplugs® Evergreen are constructed from polypropylene copolymer (PPC), a material chosen specifically for its flexibility and crack resistance at cryogenic temperatures where standard polypropylene becomes brittle. Supplied non-sterile in 1000/Bag sealed packaging, part number 220-3952-080 is rated for the full cryogenic range — from -80°C ultra-low temperature freezers through liquid nitrogen immersion at -196°C — making it a reliable choice for biobanking, cell storage, and long-term biospecimen archiving.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 220-3952-080 |
| Volume | 2.0 mL |
| Bottom Style | Conical Bottom |
| Cap Style | Snap Cap |
| Material | Polypropylene Copolymer (PPC) |
| Color | Natural |
| Cryogenic Rating | LN2 (-196°C) / Vapor-Phase Nitrogen / -80°C ULT |
| Graduations | None |
| Sterility | Non-Sterile |
| BPA / Phthalate Free | Yes |
| Pack Size | 1000/Bag |
| Country of Origin | USA |
Applications
- Biobanking and long-term cryopreservation in liquid nitrogen (LN2, -196°C) or vapor-phase nitrogen storage systems
- Ultra-low temperature (-80°C) freezer storage of DNA, RNA, serum, plasma, and tissue samples
- Cell line archiving and primary cell cryopreservation workflows
- Dry ice shipment of cryogenic biospecimens during sample transfer or clinical logistics
- Clinical biospecimen management in CAP-, CLIA-, and ISO 15189-regulated laboratories requiring full lot traceability
- Microvolume pellet recovery — the conical bottom concentrates cell pellets and precipitates at the tube tip for complete retrieval after centrifugation and thaw
Chemical Resistance
| Reagent / Condition | Compatibility |
|---|---|
| Aqueous buffers / saline | Excellent |
| Dilute acids | Excellent |
| Dilute bases | Excellent |
| Methanol | Compatible |
| Isopropanol (IPA) | Compatible |
| Acetonitrile | Compatible |
| Aromatic solvents (toluene, xylene) | Not recommended — verify before use |
Quality & Procurement
Made in USA, these MST™ cryogenic tubes are produced at Caplugs® Evergreen's ISO-certified manufacturing facility using virgin-grade, FDA-registered PPC resin that is BPA-free and phthalate-free. Each bag carries a lot number and manufacturing date to support full documentation in CAP-, CLIA-, and ISO 15189-accredited laboratories. LabSupplies.com is an authorized Caplugs® Evergreen dealer shipping from domestic inventory, with tiered volume pricing available for high-throughput biobanks, hospital systems, and grant-funded research programs.
Frequently Asked Questions
Why use PPC instead of standard polypropylene for cryogenic tubes?
Standard polypropylene homopolymer can become brittle below approximately -40°C, increasing the risk of cracking during LN2 storage or retrieval. Polypropylene copolymer (PPC) retains flexibility and impact resistance down to -196°C, which is why it is the preferred material for liquid-nitrogen-rated cryogenic tubes.
Are these tubes graduated?
No — these tubes do not have printed volume graduations. Volume monitoring during filling should be performed gravimetrically or with a calibrated pipettor rather than by visual mark estimation.
Are these tubes sterile?
They are supplied non-sterile. For applications requiring sterility — such as primary cell culture or clinical specimen collection — aseptic technique or sterile-filtered reagents should be used in conjunction with these tubes, or a sterile-certified product should be sourced instead.
Do these tubes come with caps, and are the caps rated for liquid nitrogen?
Yes, each tube includes a snap cap. The tubes and caps are rated for the full cryogenic range including liquid nitrogen immersion at -196°C and vapor-phase nitrogen storage.