20ml flat bottom gas chromatography vials with screw caps manufacturer
screw HPLC sample vials with screw caps online
glass gc headspace vials with metal cap Perkin Elmer 2021 – 07 – 06 Vials Cap Septa for GC HPLC – 2ml Amber Sample Screw Vials. 20mL, Amber Glass, 22.5*75mm, 20mm Beveled Edge, Rounded-flat Bottome, Short Neck, Crimp Top Headspace Vial suitable for PerkinElmer, 100pcs/pk. Silver, 20mm Open Top Aluminum Crimp Cap, pre-assembled with 20*3.0mm Natural PTFE/White Silicone Septa.
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