Inserts are available preassembled with a polymer bottom spring or 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. The Step Insert sits precisely in the neck of the vial, thus eliminating the need for metal or plastic springes.
Receive your quote directly from J.G. Finneran Associates, Inc for Conical Glass Inserts