High linearity for 0.25mm and 0.32mm ID columns

@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