If the reagent to be tested by the customer is very precious and the capacity of 2ml vial is too large, aijiren 8-425 2ml Autosampler Vials can be used with different types of micro-insert. There are 3 types of micro-insert, 29*5mm 150uL micro-insert with mandrel interior&polymer feet, 150uL conical bottom micro-insert and 250uL flat bottom