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.

Specification
Cap Color: Red
Bottle Color: Transparent
Material: Plastic
Capacity: 30mL
Outer Diameter of Bottle Mouth: 25mm / 0.98 inch
Bottle Height: 90mm / 3.54 inch
Overall Size: 105 x 23.5mm / 4.13 x 0.93 inch (H*OD)
Packing List: 20 x Test Tubes with Lids

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. Storage tubes, made of durable plastic, are easier to store than glass. Plastic tubes with caps is reusable, low-temperature resistant, and can be frozen for a long time.

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.