250µL Glass Flat Bottom Insert w/ID Ring. pk/100 (min.order 10pk)

350µL Glass Flat Bottom Insert w/ID Ring, Silanized, pk/100 (min.order 10pk)

100µL Polypropylene Conical Insert, w/Top Spring, pk/100 (min.order 10pk)

250µL Black PP Big Mouth Conical Insert, no spring, pk/100 (min. order 10pk)