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- Posts: 163
- Joined: Fri Jun 22, 2012 2:51 pm
I'm actually wondering if the injection port temperature is reading high somehow, and it isn't getting up to its normal temperature. Anyone ever have that issue with 6890?
I increased the injection port temperature from 250 to 265, and the PNAs looked better. I thought it was going to be bad for the more reactive analytes, but they didn't look like they were effected much.
That leads me to wonder what inj port temps others use for 8270, with DCM as the solvent. Most of the methods I've seen stick with 250.
I'm also curious if anyone has tried ramping it. I'm not sure if that would accomplish anything, since I've never heard of anyone doing it. It seems like it would have to be sensitive to timing: especially with a spitless injection. You'd have to give the injection port enough time to reach its final temperature before you opened the split vent and ramped the oven, right?