50µL Glass Conical Limited Volume Insert, 4x25mm, Precision-Formed Mandrel Interior, w/Bottom Spring 4005BS-425

Glass Conical Inserts. Inserts are available preassembled with a polymer bottom 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. Limited volume inserts are available silanized or precleaned.