Preassembled with foamed polyethylene lined polypropylene closures. All HDPE bottles and jars are also available with PTFE-lined closures or unlined closures. Available in standard and precleaned in accordance wth recommended E.P.A. Protocol.

CLASS 1: (Standard) Containers are assembled with liner and closure without washing treatment.

CLASS 2: (Precleaned) Containers are processed according to EPA recommended wash procedures. Washed with laboratory grade biodegradable, non-phosphate detergent, rinsed with ASTM Type I De-ionized water, over dried, and assembled in a contaminate-free environment. The exterior of each case is labeled with a lot number. Each case contains a copy of wash "Standard Operating Procedure."