A rounded bottom vial is more sturdy and resistant to high pressure during the heating process. Flat bottom vials are more appropriate for certain 

High performance caps/septa; Available with flat DIN crimp neck for tighter seal; Thicker wall 1,2 mm withstand higher internal pressure. Headspace ND20 

20ml ND18 Headspace Screw Vial (clear), 75.5 x 22.5mm, rounded bottom, 10ml ND20 Headspace Crimp Vial (amber), 46 x 22.5mm, rounded bottom, ...

High quality range of Headspace Vials ND20 products available at low cost with Free Delivery available (Terms and Conditions apply)

Use these 6, 10, and 20 mL SureSTART Glass Crimp Top Headspace Vials, Performance Level 3, for your volatile gas analyses.

This product is an alternative to the products (SKU) of these brands: Aijiren: (alt.) - Aijiren Technology:- Chromacol: 20-CV (alt.)

its customers a complete range of high-quality laboratory glassware ND20. Headspace Vials ... Jaw sets for WHEATON® high performance crimping tools.

This 20 ml headspace vial (ND20) is produced out of clear tubular borosilicate glass of the 1st hydrolytic class. This vial is manufactured according to