1.5 mL Conical Microcentrifuge Tubes — Polystyrene, Natural, Snap Cap, 1000/Bag (214-3721-010)
These 1.5 mL polystyrene microcentrifuge tubes feature a conical bottom and snap cap, making them a reliable choice for everyday microvolume workflows in molecular biology, clinical, and research laboratories. Supplied non-sterile in sealed 1000/Bag packaging, they are manufactured to consistent dimensional tolerances for reliable fit in standard 1.5 mL microcentrifuge rotor positions. The natural (clear) polystyrene construction provides optical clarity for direct visual inspection of sample color and volume without removing the tube from the rotor.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 214-3721-010 |
| Volume | 1.5 mL |
| Bottom Style | Conical |
| Cap Style | Snap Cap |
| Material | Polystyrene (PS) |
| Color | Natural (Clear) |
| Sterility | Non-Sterile |
| Pack Size | 1000/Bag |
| BPA / Phthalate Free | Yes |
| Country of Origin | USA |
Applications
- PCR preparation and enzyme reactions requiring precise microvolume handling
- DNA and RNA extraction with complete pellet recovery from the conical tip
- Protein precipitation and microvolume sample aliquoting
- Cell pelleting during low-speed centrifugation workflows
- Serum and plasma microvolume processing in clinical and CAP/CLIA-accredited laboratories
- Sample storage with secure snap-cap sealing to prevent evaporation and contamination
Chemical Resistance
| Reagent / Condition | Compatibility |
|---|---|
| Aqueous buffers / saline | Excellent |
| Dilute acids | Excellent |
| Dilute bases | Excellent |
| Methanol | Good — short-term contact |
| Acetonitrile | Limited — use with caution |
| Ethyl acetate | Not recommended |
| Aromatic / chlorinated solvents | Not recommended |
Quality & Procurement
Made in USA, these Caplugs® Evergreen microcentrifuge tubes are produced from virgin-grade, BPA-free, phthalate-free polystyrene resin at ISO-certified manufacturing facilities. Each bag carries a lot number and manufacturing date, supporting full traceability requirements for CAP, CLIA, and ISO 15189 accredited laboratories. LabSupplies.com is an authorized Caplugs® Evergreen dealer and ships from USA inventory, providing consistent domestic supply without the lead-time variability of offshore sourcing. Tiered pricing is available for high-volume institutional and grant-funded accounts.
Frequently Asked Questions
Are these microcentrifuge tubes sterile?
No — the tubes are supplied non-sterile. For applications requiring a sterile working environment, treat tubes by appropriate methods before use, or inquire about sterile product options.
Are polystyrene tubes suitable for centrifugation with organic solvents?
Polystyrene performs well with aqueous buffers, dilute acids and bases, and methanol in short-term contact, but it is not resistant to aromatic solvents, chlorinated solvents, or ethyl acetate. For protocols involving those reagents, a polypropylene tube is the better choice.
Can these tubes be autoclaved?
No — polystyrene is not autoclavable and will deform under steam sterilization temperatures. These tubes are intended for non-sterile, room-temperature or refrigerated workflows.
How does the conical bottom affect sample recovery?
The conical geometry concentrates pellets at the very tip of the tube after centrifugation, minimizing dead volume and allowing near-complete microvolume recovery with a standard pipet tip — an important advantage in DNA/RNA extraction and protein precipitation workflows.