Sample vials with short thread ND9 Vial kit, HPLC-certified, Brown . ROTH SELECTION⮞HPLC and GC-certified, tested for blank values and impurities. thread ND9 Vial kit, HPLC-certified, Brown glass, with labelling space. Short Thread 9mm Amber Glass 1.5 mL HPLC Autosampler Vials w. Borosilicate Glass material provides higher quality material that is more resistant to thermal