hplc vial caps in amber for Aijiren autosampler for sale Sigma . Aijiren 8mm crimp top headspace vials with flat bottom for The Chromatography Direct range of 20mm Crimp Top Headspace Vials and Caps are available in 20ml Amber and Clear, 0ml and 6ml in a variety of flat and round bottom - suitable for CTC, Perkin Elmer and Aijiren autosamplers.