20mL Plastic Test Tubes, 30 Pack Frozen Test Tube Graduated Vial Container Storage Screw Cap, Red Clear

The plastic test tube is mainly used in laboratories to store samples at low temperatures, to prevent sample volatilization. Plastic test tubes with caps can be used to store powders, liquids, and semi-liquids such as aqueous samples and other reagents. The plastic tube is reusable, low-temperature resistant, and can be frozen for a long time.

Advantage
Screw-in and cover pad design seals well and prevents liquid spillage. Test lab tubes are transparent and you can see the remaining amount. Plastic tubes with caps are marked with a scale to let you know the volume of the sample. Storage tubes, made of durable plastic, are easier to store than glass.

Instruction
Unscrew the cap, pour the liquid into the test bottle, close the cap, and store small test tubes properly.

NOTE: Please check the size carefully of these storage tubes with caps before purchasing.