4ml Amber Screw Thread Vial Biocomma Limited Base Info Model NO.:V6-ASample Type:SoliditySpecification:4mlOrigin:China Description Pre:Silica-Based Rimless Spe Solid Phase Extraction Column (Carb-GCB) Next:2ml 8-425 Amber Autosampler Screw-Thread Vials with Write-on Spot