网页VWR® Vials and Closures Convenience Kits for Shimadzu HPLC Autosamplers Description: Wide opening vials feature 40% larger neck opening than standard HPLC Vials & Closures - Chrom Tech. Chrom Tech offers a large selection of autosampler vials and closures, For labs using an autosampler, make sure to choose autosampler vials that are .