Clear EPA vials are Converted from Type I, 33 expansion borosilicate glass tubing and amber EPA vials are converted from Type I, 51 expansion borosilicate glass tubing
While vials are not "pre-cleaned," they are packaged in a plastic shrink wrap module, lehr-clean, as they come from the end of the production lehr and then are placed into a corrugated shelf-pack
Open-top closures and PTFE-faced silicone septa or solid-top PFTE-faced white rubber-lined closures are available separately