best w 250UL insert
Certified 250ul insert conical for hplc vials VWR
Big Mouth limited volume inserts, 250uL PP, Conical, Plastic . 250µL Polypropylene Big Mouth Conical LVI, Precision-Formed Interior, w/Plastic Flange for Step Vial. Limited Volume Inserts for Snap Seal, Large Opening & Big Mouth Screw Thread Vials protect against breakage if the needle bottoms out.
250uL Micro-Insert, Flat Bottom, Clear, 31x5mm for 8-425
250uL Micro-Insert with Mandrel Interior and Polymer Feet, 29×5.7mm for 9mm vi...
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