6 mL column with: 500 mg PSA on bottom 500 mg Graphitized Carbon on top separated by a PTFE frit Alternate QuEChERS dSPE clean up cartridge

@ChromDirect
Show your colleagues how much you have saved - FREE oversized (1 pint) #Chromatography Direct Mug with all orders over £500 (*excluding VAT & Delivery - while stocks last) placed via https://t.co/baDxFmspA8 (1 per order). #TeaBreak #MassSpectrometry #Laboratory