The test tube is mainly used in laboratories to store samples at low temperatures, to prevent sample volatilization. It can be used to store powders, liquids, and semi-liquids such as aqueous samples and other reagents.Advantage1. Screw-in and cover pad design seals well and prevents liquid spillage.2. The small tube is transparent and you can see the remaining amount. It is marked with a scale to let you know the volume of the sample.3. Made of durable plastic, it is easier to store than glass. Reusable, low temperature resistant, can be frozen for a long time.InstructionUnscrew the cap, pour the liquid into the bottle, close the cap and store it properly.NOTE: Please check the size carefully before purchasing.
