hplc clear shell vials flat bottom for sale-HPLC Vial Inserts 12/5/2021 · 300uL Micro-Insert, 31*6mm Clear, Flat Bottom, Suits for 11mm Crimp-Top Vials: 250uL Conical Micro-Insert, 31*5.7mm, inserts manufacturer India 150ul micro insert vial manufacturer 300ul