Amber Threaded Bottle Ethylene-Acrylate Coated manufactured by Brandtech Scientific is made of soda-lime glass and has a space-saving square design. The Ethylene-Acrylate coating envelops the glass bottle like a protective skin providing better protection. Should the bottle break, the splintering hazards are reduced considerably. The maximum operating temperature for coated bottles is 80°C. To preserve the coating, do not clean at temperatures exceeding 60°C.