6-20mL 20mm Crimp-Top Headspace ND20–glass sample vials Home » Products » 6-20mL GC Headspace Vials » 6-20mL 20mm Crimp-Top Headspace ND20 6-20mL 20mm Crimp-Top Headspace ND20 Material: USP Type 1, Class A, 33 Borosilicate Glass 6-20mL 20mm Crimp-Top Headspace ND20-Aijiren Vials With Caps Details Products name 6-20mL 20mm Crimp-Top Headspace ND20 Dimension 20mm Cap Color Silver Septa