2 mL Glass Vials, China Crimp Top Chemistry Sample Vials - Hawach. The crimp top sample vials produced by Hawach have two colors, clear and amber, including pre-slit and non-pre-slit caps. recommended konik autosampler vials. 2 mL vials using 11 mm crimp caps (105 vial tray) 7 x 30 mm Amber Crimp Top Vial - 0.6 mL Capacity