2022/07/11 · very low expansion coefficient HPLC vials marking spot 07 11 2022 supelco HPLC glass vials very low expansion coefficient 100 X Autosampler Vials 2ml HPLC. $22.99. LOW EXPANSION COEFFICIENT - 9mm Screw Thread Autosampler Vials are made of clear Type 1, Class A Borosilicate Glass with very low expansion coefficient.