septa caps for sale for HPLC Vials Thermo Fisher-Aijiren. Thermo Fisher 18mm crimp top gc vials with flat bottom Thermo Scientific 11 mm Autosampler Vial Crimp Caps Minimize contamination from handling with pre-assembled caps and septa; compatible with most HPLC and GC autosamplers. 9.55 EUR - 323.00 EUR Thermo Scientific headspace vials are.