Fisherbrand Centrifuge Tube 1.5 ml Locking Snap Cap Pack of 300 Tubes

Fisherbrand 14-666-318 Microcentrifuge Tube – 1.5 mL, Locking Lid, Sterile

The Fisherbrand 14-666-318 is a high-performance 1.5 mL microcentrifuge tube designed to provide absolute sample security during rigorous laboratory protocols. Molded from premium virgin polypropylene, this tube features a highly secure locking snap-cap mechanism. Once pressed closed, the locking clasp physically hooks over the rim of the tube, creating an unyielding seal that prevents the lid from blowing open during high-temperature incubations or prolonged boiling. Engineered with heavy-duty walls, it safely withstands centrifugation speeds up to 26,000 x g without deforming. To meet the strict demands of clinical, forensic, and cleanroom environments, each tube is individually sealed and certified sterile (free of DNase, RNase, hDNA, and pyrogens), allowing researchers to utilize a single tube without exposing the rest of their inventory to ambient laboratory contaminants.

Technical Performance and Design

• Locking Snap-Cap Mechanism: The engineered clasp snaps securely over the tube rim, providing a leak-proof seal that eliminates the need for messy mechanical "cap locks" or lid clips during 100°C water bath incubations.

• Extreme RCF Rating: The uniformly thick polypropylene construction safely withstands massive g-forces up to 26,000 x g, making it perfectly suited for dense phase separations, organic extractions, and nucleic acid precipitations.

• Individually Sealed Sterility: Each tube is individually packaged and sterilized, guaranteeing that the internal environment remains completely bio-burden-free until the exact moment of use at the bench or biosafety cabinet.

• Thermal Stability: Safe for use across a massive temperature gradient; it can be boiled for Western blot sample prep or safely transferred directly to an ultra-low temperature freezer (-86°C) for long-term cryo-preservation.

Product Specifications

• Catalog Number: 14-666-318

• Capacity: 1.5 mL

• Maximum RCF: 26,000 x g

• Material: Virgin Polypropylene

• Lid Style: Flat, Locking Snap Cap

• Sterility & Packaging: Sterile, Individually Sealed

Key Benefits & Applications

• Strict Aseptic Workflows: The individually sealed packaging is invaluable for clinical diagnostics, sterile aliquoting, or single-use cleanroom procedures where bulk-bagged tubes pose an unacceptable cross-contamination risk.

• High-Visibility Identification: The flat, frosted cap and a large frosted writing area on the side of the tube allow for easy, smear-resistant labeling with standard laboratory markers.

• Maximum Sample Recovery: The ultra-smooth interior surface reduces the non-specific binding of dilute nucleic acids and proteins, ensuring high yield during micro-volume recoveries.

• Forensic Integrity: The combination of the locking mechanism and the sterile, single-unit packaging makes it an ideal collection vessel for sensitive chain-of-custody biological evidence.

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