Easy to marking area: Plastic centrifuge tubes include a convenient white writing patch for easy marking and identification. This little mark tube feature is very convenient for labelings purposes. Material: The conical centrifuge tubes are made of high quality PP (polypropylene). Application: Apply to loading solid, liquid, powder, pills, granular objects etc. Plastic detachable centrifuge tube rack: The Plastic Centrifuge Tube Rack is suitable for 10ml/15ml centrifuge tubes and laboratory test tubes.The use temperature range is -20 to 70℃, resistant to acid, alkali.<br><br>Colour:Blue Material:Plastic<br><br>Package Contents: 100 * 15ml Plastic Centrifuge Tubes 1 * Plastic detachable centrifuge tube rack<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.