100 Pcs Membrane Solutions 2ml HPLC Vials, Autosampler Vials, 9-425 Sample Vials with Write-on Spot, Graduations, 9mm Blue ABS Screw Caps & Septa for GC Sample vials B075K58G5G $68.05 $36.74 Color: Clear Vial & Red PTFE septa Features: LOW EXPANSION COEFFICIENT - 9mm Screw Thread Autosampler Vials are made of clear Type 1, Class A Borosilicate Glass with very low expansion