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. SpecificationCap Color: RedBottle Color: TransparentMaterial: PlasticCapacity: 30mLOuter Diameter of Bottle Mouth: 25mm / 0.98 inchBottle Height: 90mm / 3.54 inchOverall Size: 105 x 23.5mm / 4.13 x 0.93 inch (H*OD)Packing List: 20 x Test Tubes with LidsAdvantageScrew-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.
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