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- Posts: 25
- Joined: Mon Dec 12, 2016 7:24 am
I'm unable to get a flat TCD baseline; it drifts wildly as I change oven temperature. If I increase the oven temperature the TCD signal decreases and eventually recovers to a slightly lower steady-state value. If I decrease the oven temperature, the TCD signal increases and then recovers partially.
I have leak tested the entire system using Agilent's pressure-drop method and using an electronic leak detector, and no leaks are present. Agilent came to service the instrument and switched out the entire purged packet inlet, my packed column, and even the EPC module. One hefty bill later, the problem has not improved at all.
Haefa