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CG 6890N PEAKS

Posted: Tue Apr 21, 2015 10:36 pm
by carlosmvc71
Hi

every timer i performance a blank run, a peak apears betwin 4 and 5 minuts

My device is a agilent 6890n, whit a TCD and PPI

How i can do to resolve this problem?

Re: CG 6890N PEAKS

Posted: Wed Apr 22, 2015 5:59 am
by dblux_
Hi

every timer i performance a blank run, a peak apears betwin 4 and 5 minuts

My device is a agilent 6890n, whit a TCD and PPI

How i can do to resolve this problem?
What do you mean by blank run? No injection or solvent injection ?

Re: CG 6890N PEAKS

Posted: Wed Apr 22, 2015 12:42 pm
by AICMM
Column? Valves? Carrier? The more you tell the more helpful people can be.

Best regards,

AICMM

Re: CG 6890N PEAKS

Posted: Sun Apr 26, 2015 1:28 am
by carlosmvc71
thanks

Colunns: Packed columns 10 ft mesh 45/60 stainless steel
10 port valco valve whit Gas Sampling with Backflush to Detector configuration
PPI inlet
Carrier gas Hellium

The chroma was off by more tan year

The TCD is a new element