We can customize this glass vials product, its characteristic is Each vial is equipped with plastic stopper and seal gasket in screw aluminum cap, seal tight to prevent any leakage.You can put it anywhere you want without worrying about leaking, easy to store and carry. The material of it 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. The vial is great for storing liquids, powder, seeds, specimen, and small objects etc. Air doesn’t get into the vial, don’t worry about deterioration. 50 10ml glass vials, 50 screw aluminium caps, 50 plastic stoppers, 64 label stickers, protected with air bubble film and thick carton, give it to you safely.