Jan 26, 2022 · hplc vial caps in amber for hplc system supplier aijiren Technology . aijiren Tech 2 ml vials with caps in amber for aijiren Technology HPLC There’s a aijiren Tech screw top vial for every HPLC, GC, MS instrument, application, and budget. Our screw top clear and amber glass vials and plastic screw top vials are available in 8mm, 9mm, 10mm, and 13mm screw threads.