UN-approved.
Type 1: Light cap, white, PP, tamper-evident ring, white, PTFE cup-shaped liner (without figure)
Type 2: Light cap, black, HDPE, tamper-evident ring, black, PTFE cup-shaped liner
Type 3: Bell cap, black, PP, tamper-evident ring, red, cup-shaped PTFE liner
Type 4: Bell cap, red, PP, with degassing membrane, tamper-evident ring, red, cup-shaped, perforated PTFE liner
Closures winchester bottles
Closures reagent bottles