w/Patented Top Spring™

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  100µL Polypropylene Conical Limited Volume Insert, Precision-Formed Interior, w/Patented Top Spring™, 1000 per case

  $279.60 $237.66
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  300µL Glass Conical Limited Volume Insert, Precision-Formed Mandrel Interior, w/Patented Top Spring™, 100 per case, Item# 403TS-638

  $68.20 $57.97
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