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Sigma Aldrich Fine Chemicals Biosciences freezing vials natural cap
Supplier: Sigma Aldrich Fine Chemicals Biosciences V4131500EA
Manufactured from an exceptionally clear virgin polypropylene with a medical-grade silicone O-ring seal. These vials are designed for safe storage at temperatures as low as -196C but should be used only in the gas phase of liquid nitrogen.The specially formulated silicone O-ring ensures a positive leakproof seal at all temperatures. A unique base on the skirted vials locks them into place in the microtube locking work station (Z376809). Tubes can be autoclaved to 121C in upright position with caps loosened. They also can be centrifuged up to 17 000 x g.
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