0.5 mL Microcentrifuge Tubes, Conical Bottom, LDPE, Natural — 214-3715-020 | 1000/Bag | Caplugs® Evergreen

0.5 mL Conical Microcentrifuge Tubes — LDPE, Natural, Snap Cap, 1000/Bag

These 0.5 mL conical-bottom microcentrifuge tubes are manufactured from virgin-grade Low-Density Polyethylene (LDPE) in a natural (translucent) color, supplied non-sterile in sealed 1000/Bag packaging for high-throughput bench workflows. The snap-close cap and conical tip geometry make them well-suited to microvolume sample recovery, aliquoting, and storage across clinical, research, and biotech environments. Lot-to-lot dimensional consistency ensures reliable seating in standard microcentrifuge rotor positions without modification.

Technical Specifications

Applications

• PCR preparation and enzyme reaction setup requiring microvolume conical geometry
• DNA and RNA extraction, where low dead volume at the conical tip maximizes nucleic acid recovery
• Protein precipitation and cell pelleting — the conical bottom concentrates pellets at the tube tip for complete aspiration
• Sample aliquoting and short- or long-term storage using the secure snap-close cap
• Clinical microvolume sample processing in CAP-, CLIA-, and ISO 15189-accredited laboratories requiring full lot traceability
• Automated liquid handling workflows where standard 0.5 mL tube format compatibility is required

Chemical Resistance

LDPE offers excellent resistance to aqueous buffers, dilute acids and bases, and common laboratory alcohols, with very low moisture vapor transmission that supports stable sample storage. The inherent flexibility of LDPE also reduces tube-cracking risk during handling and centrifugation compared to rigid polypropylene or polystyrene formats, and allows controlled sample dispensing in microvolume workflows.

Quality & Procurement

Made in USA at Caplugs® Evergreen ISO-certified facilities, these tubes are produced from FDA-registered virgin-grade LDPE resin that is BPA-free and phthalate-free. Each sealed bag carries a lot number and manufacturing date to support full traceability under CAP, CLIA, and ISO 15189 quality programs. LabSupplies.com is an authorized Caplugs® Evergreen dealer and ships from domestic USA inventory, eliminating offshore lead-time risk and ensuring consistent supply for standing purchase orders and grant-funded procurement.

Frequently Asked Questions

Are these microcentrifuge tubes sterile?
No — part number 214-3715-020 is supplied non-sterile. For applications requiring sterile tubes, look for gamma-irradiated or sterility-certified variants; for most molecular biology, protein, and clinical chemistry workflows, non-sterile tubes are standard practice.

Why choose LDPE over polypropylene for 0.5 mL microcentrifuge tubes?
LDPE is significantly more flexible than polypropylene, which reduces cracking during handling and allows technicians to gently squeeze the tube wall to aid sample recovery. If autoclavability is required, polypropylene is the better choice — LDPE is not autoclavable. For cold storage, aliquoting, and microvolume recovery workflows, the flexibility of LDPE is a practical advantage.

Will these tubes fit standard microcentrifuge rotors?
Yes — the 0.5 mL conical format is dimensionally consistent with standard microcentrifuge rotor positions designed for this tube size. Lot-to-lot manufacturing controls maintain consistent geometry and wall thickness across all tubes in each bag.

Do these tubes support traceability requirements for accredited clinical laboratories?
Yes — each bag is labeled with a lot number and manufacturing date, providing the documentation needed for CAP, CLIA, and ISO 15189 traceability programs. LabSupplies.com, as an authorized dealer, can provide additional lot documentation upon request.