▶Leakproof◀ Each Test Tube is equipped with plastic stoppers and seal gasket in screw plastic cap, seal tight to prevent any leakage.You can put it anywhere you want without worrying about leaking, easy to store and carry.
▶Material◀ The Flat Test Tube is made of borosilicate glass which can withstand temperatures from minus 200 to 200 degrees. They can be refrigerated, heated and boiled. Durable and can be used repeatedly.
▶Wide Applications◀ The Flat Test Tube is great for storing liquids, powder, seeds, specimen, and small objects etc. Air doesn't get into the vial, don't worry about deterioration.
▶Package◀ 24 30ml glass Test Tube, 24 screw plastic caps, 24 plastic stoppers, 64 label stickers, protected with air bubble film and thick carton, give it to you safely.
