Home / gc headspace vials with writing space Sigma gc headspace vials with writing space Sigma Cryogenic tube | Sigma-Aldrich cryogenic vial, 1.8 mL, internal thread, round bottom, free standing, 1800/cs, capacity 1.8 mL, Internal thread, round bottom (self-standing), pack of 1800 ea (4 x 450 ea) Pricing: V7884: cryogenic vial, 1.8 mL, internal