15 x 45 mm, 1 dram (4 ml) amber borosilicate glass vial with 13-425 black phenolic rubber lined cap attached. Amber screw thread vials offer protection from harmful light and uv rays for light sensitive products. these general purpose glass vials are made of type i borosilicate glass, providing exceptional resistance to heat shock and chemical leaching. Attached black phenolic (thermoset) rubber lined caps are autoclavable. The liner is compliant with FDA 21 CFR 177.2600 rubber articles intended for repeated use. the liner exhibit good resiliency and resistance to moisture vapor. The closures provide consistent adherence to close dimensional tolerance.