VWR Microcentrifuge Tube 1.5 ml Green Screw Cap PP Pack of 500 Tubes

VWR Screw-Cap Microcentrifuge Storage Tubes – 1.5 mL, Clear Polypropylene, Free-Standing Self-Skirted Base, Molded Graduations, Green O-Ring Caps, Non-Sterile (MPN: 89004-292)

The VWR 89004-292 (also cataloged as 89004292 or 89004-292-PACKOF500) is a premium, molecular-biology-grade microcentrifuge tube assembly engineered for secure sample processing, transport, high-speed centrifugation, and long-term ultra-low temperature cryogenic storage. Injection-molded from ultra-clear, high-purity USP Class VI virgin polypropylene (PP), these 1.5 mL tubes feature a specialized free-standing, self-skirted bottom geometry. This self-standing structural profile allows individual tubes to stay perfectly upright on flat workbenches and laminar flow hood decks without requiring a specialized supporting rack. Each tube comes paired with a secure, green threaded screw cap equipped with an integrated silicone O-ring, generating a high-pressure hermetic seal that handles extreme centrifugal fields up to 20,000 x g without leakage or dynamic fluid tracking.

Technical Performance and Design

• Free-Standing Self-Skirted Architecture: Designed with an integrated outer plastic support skirt molded around the bottom conical tip. This profile enables the tube to sit firmly upright on flat surfaces, streamlining high-throughput single-handed pipetting and compound loading lines.

• Silicone O-Ring Leakproof Mechanical Seal: Outfitted with a heavy-duty green polypropylene screw cap containing a high-retention internal silicone O-ring gasket. The elastomeric seal counters internal gas pressure build-up and blocks moisture vapor migration during intensive deep-freeze or boiling cycles.

• High-Force Centrifugal Endurance: Engineered with heavy-duty structural walls validated to withstand continuous, extreme relative centrifugal forces up to 20,000 x g, making them fully compatible with pelleting, cell washing, and analytical extraction sweeps.

• Certified Cleanroom Purity Matrix: Manufactured in a strict Class 100,000 cleanroom environment under ISO 9001 and ISO 13485 quality standards. Every batch is certified free of detectable RNase, DNase, and endotoxin contamination to preserve the integrity of down-stream assays.

Product Specifications

• Catalog Number / MPN: 89004-292 

• Manufacturer / Brand: VWR International / Avantor

• Volumetric Capacity: 1.5 mL

• Bottom Shape Style: Free-Standing (Self-Standing Base with Internal Conical Center)

• Closure Mechanism: Threaded Screw Cap with Silicone O-Ring

• Cap Color Profile: Green

• Material Composition: Premium USP Class VI Virgin Polypropylene (PP)

• Sterility Status: Non-Sterile (Fully Autoclave-Safe at 121 C for 20 minutes)

• Thermal Endurance Window: Structural stability verified from ultra-low deep freezing down to minus 80 C up to autoclaving at 122 C

Key Benefits and Applications

• Genomics and Sample Archiving: The standard storage vessel selection for bio-banking genomic DNA templates, active RNA extractions, master mixes, and rare cell pellet stocks inside deep-freeze chests.

• Single-Handed Hood Workflows: Self-standing skirted bottom allows technicians to position rows of tubes bare on the benchtop deck, making sequential reagent addition rapid and stable without rack-tipping worries.

• Permanent Volumetric Metrics: The high-clarity clear barrel walls are molded with permanent, crisp volumetric graduation lines, allowing for accurate visual fluid alignment tracking down to micro-volumes.

• Robust Chemical Compatibility: Polypropylene resin formulation offers broad chemical immunity, defending against degradation from aggressive organic solvents, strong acids, bases, and general laboratory reagents.

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