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- Posts: 19
- Joined: Sat Mar 17, 2007 11:54 am
Hooray for the forum!
I'm long pass my problems with my exceptionally high baseline, thanks for everyone who helped. But now new problems have arisen.
I know it's a contamination but where? I've cleaned or replaced soon the entire machine. The problem is, that when I inject only the solvent (chloroform) I get peaks, as if I'd injected a poor sample. With a blank injection, no peaks appear.
I've replaced the needle and the inlet, cleaned the gold plate and the detector. My column is almost brand new.
Where to look next?
Specs for my setup:
- Capillary column (Restek Stabilwax DA)
- Solvent is chloroform, needle cleaning solutions chloroform and MeOH
I'm long pass my problems with my exceptionally high baseline, thanks for everyone who helped. But now new problems have arisen.
I know it's a contamination but where? I've cleaned or replaced soon the entire machine. The problem is, that when I inject only the solvent (chloroform) I get peaks, as if I'd injected a poor sample. With a blank injection, no peaks appear.
I've replaced the needle and the inlet, cleaned the gold plate and the detector. My column is almost brand new.
Where to look next?
Specs for my setup:
- Capillary column (Restek Stabilwax DA)
- Solvent is chloroform, needle cleaning solutions chloroform and MeOH
