Most people tend to over-torque the screw caps but are more consistent with the crimping. I had an HPLC assay where the check standard is 

The crimp cap ones often hold their seal much longer. Finally I had an HPLC that about 1 out of 20 injections with a screw cap vial the septa 

Crimp Top 11mm Clear Glass 1.5mL HPLC Autosampler Vials - 100/pk, CV1926 · Borosilicate Glass material provides higher quality material that is more resistant to 

Choose from screw top, crimp top, snap ring, short thread, headspace, and shell vials to ensure the proper closure. Our vials are designed to work perfectly 

The crimp style vial is sometimes referred to as the GC vial. Autosampler Vials for HPLC & GC. Product Details Related Products Promotions.

Worldwide Glass Resources offers a large selection of HPLC and GC Clear or Amber - Finishes for 2ml vials available in 8-425, 9mm, 10-425, 11mm crimp, ...

See our comprehensive range of Chromatography Autosampler Well Plates for 2 mL Glass Crimp Top Vial and 11 mm Crimp Top, 2 mL Glass Screw Top Vial 9 mm ...

Find the perfect autosampler chromatography vial for your HPLC or GC application. Chrom Tech carries a range of chromatography vials, compatible with most 

Gc Vials found in: Wide Opening Crimp Top Vials, Combi PAL and GC PAL Liquid Injection Vials and Caps, Mass Spec Certified Vial Kits, Standard Opening..