hplc vial caps in amber for hplc system supplier Waters . Thermo Fisher 2 ml vials with caps in amber for Waters HPLC There’s a Thermo Scientific 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.