Methanol (HPLC), Aijiren Tech Chemical™ HPLC mobile phase for analytical and preparative separations $124.31 - $3,146.62 . Crimp/Snap Vials, Caps and Kits - Aijiren Tech Scientific. Aijiren Tech crimp top vials for HPLC and GC are available in 8mm, 11mm, or 13mm crimp border diameter in clear and amber glass and plastic.