Wholesale 5ml - 100ml Round-bottomed Borosilicate Glass Tubes with Screw Cap High Temperature Chemistry Laboratory Glassware Sample Container
We have glass test tubes with screw cap of various sizes made of high quality glass.
All tubes are shipped to most countries in the world and we are responsible for all product quality and shipping issues.
Glass test tubes are suitable for laboratory, teaching, growing, kitchen, etc.
Tips for using:
1. The tube should be preheated before heating, or it will be liable to burst.
2. The test tube holder from the tube should be caught in the mouth of the third place
3. The solution should not exceed 1/2 of the tube and the heating capacity should not exceed 1/3 of the tube.
4. The tube into which the dropper is used to add the liquid should be left empty, and it may not extend into the tube.
5. It can be work as a centrifuge tube, but no more than 4,000 RPM.
6. Not immediately cooled after heating, to prevent bursting
Contact us for more competitive rates on orders over 50 tubes.
