Scintillation vials, Macro, 20 ml,, made of HDPE, closure made of PPScintillation vials, Macro, 20 ml,, made of HDPE, closure made of PP Material: HDPE, PP screw caps. Compatible with all conventional liquid scintillation counters. The screw cap of the 20 ml tubes seals with as little as a quarter turn. In vitro diagnostic medical device according to IVDD Technical Information Vol. 20 ml Material HDPE 27 mm Height 61 mm