20 Pieces 5ml Graduated Cryovials, Small Plastic Vials with Screw Caps and Silicone O-Rings, Aquarium Test Tube Replacement - Product Features
- CLEAR graduation marks for reference, capable of standing themselves.
- SCREW on cap with a inserted silicone o-ring makes it available to carry fluids,like transporting fountain pen ink or as test tube replacement for aquarium water.(screw on correctly and make sure inside o-ring the right place make it watertight.)
- MADE of good quality PP with great cap tightness, suitable to be placed in situations under (-180?).
- SIZE: 5ml, 20 tubes and 20 lids in the package.for Detail dimensions, please refer to the picture.
- VIAL container for a variety of uses: carring small meds in your pocket,holding small supplies,seed collecting, storing dry things or transporting fluid are all being available.It's always a good choice to check size for your needs.