12x32mm, 10-425mm Neck Finish Big Mouth Screw Thread
Conical Polypropylene Inserts

12x32mm, 10-425mm Neck Finish Big Mouth Screw Thread
Conical Polypropylene Inserts

pp inserts1
  Item # Description Case Pack
  401PTS-530 100µL Polypropylene Conical Limited Volume Insert, Precision-Formed Interior, w/Patented Top Spring™ 1000 pieces View Product
  4025P-631 250µL Polypropylene Big Mouth Conical Limited Volume Insert, Precision-Formed Interior, No Spring 1000 pieces View Product
  4025P-631BK 250µL Black Polypropylene Big Mouth Conical Limited Volume Insert, Precision-Formed Interior, No Spring 1000 pieces View Product
  4025PBS-631 250µL Polypropylene Big Mouth Conical Limited Volume Insert, Precision-Formed Interior, with Bottom Spring 1000 pieces View Product
         

Inserts are available preassembled with a polymer bottom springor patented Top Spring™. The polymer spring acts as a shock absorber that protects against breakage if the needle bottoms out. The conical design permits complete sample removal.