Hello all,

I am currently using a HP 5890 Series II gas chromatography instrumentation and am currently have trouble maintaining a steady baseline. The detector used in the instrument is a TCD that has a steady oscillation that increases slowly to 265000 from 260000 then quickly drops back down. This oscillation take about 30 minutes and the carrier gas is hydrogen. What can I do to remove the oscillation and have a steadier baseline?