400ul flat bottom glass insert, 500/pk

250µL Glass Big Mouth Conical LVI Insert, w/spring, pk/100 (min.order 10pk)

Silanized - 250µL Glass Big Mouth Insert, no spring, pk/100 (min.order 10pk)

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