High Transparency - it is easy to observe the condition in the test tube.With 1-5ml calibration, easy reading of the liquid volume.Orange Compact Screw Sealing Cap - firmly matched, and the sample will not volatilize.Low Temperature resistance - can be cryogenic (-180 )Used in hospitals, epidemic prevention station, schools, scientific research laboratory, etc.Specification: 5ml (erect)Packing: 200 pieces or bagsOuter diameter: 16mmHeight: 59mmColour:blueMaterial:plasticPackage Contents:1 set x plastic tubes with capsOnly the above package content, other products are not included.Note: Light reflection and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is 1-3cm.