These bottles are coated with PVC-based plastisol. The strength, slip resistance and impact absorption qualities of the plastisol coating reduce potential breakage and help protect laboratory personnel handling hazardous materials. These bottles help meet OSHA requirements. The bottles are manufactured from soda-lime glass, which meets USP Type III standards and are not autoclavable. Metal foil liners are generally more resistant to organic solvents. Poly-Seal and polyethylene liners are for distilled water, analytical standards and reagents. PTFE liners are inert to most chemicals. Caps are included.