▶Features◀ Each glass test tube is equipped with cork stopper, it can be closely attached to the test tube, enabling good sealing performance and can effectively prevent liquid leakage, have a good seal. The mouth of the bottle is thickened.
▶Material◀ The test tube is made of borosilicate glass which can withstand temperatures from minus 200 to 200 degrees. They can be refrigerated, heated and boiled, used at high temperature. Durable and can be used repeatedly.
▶Wide Applications◀ The flat test tube is great for storing liquids, bath salts, powder, seeds, specimen, and small objects etc. Transparent test tubes are suitable for various scientific experiments, plant propagation, making crafts, holiday party and home decoration.
▶Package◀ 6 30ml glass test tube, 6 cork stoppers, 64 label stickers, protected with air bubble film and thick carton, give it to you safely.