area and height difference

Hi

Leak may be reason..Check leak first.

How old is column?

It is new. 2 months

Ok.

Earlier it was working fine with same method & standard???

Check inlet..

If it's contaminted then possible.

2nd thing run any other method with solvent to see that it's instrument problem or dilution or method.

We just began with this method and it was working quite well, but on the other side we just have a few trials. And it is the only one we have right now.

So how is now?

I try to do the leak test, but I cannot find the "diagonstick" option :(

Above is leak test procedure of 7697a headspace...

Above is leak test procedure of 7697a headspace...

If sample is very volatile then take small volume of sample in 20ml vial..

thank you. I try to perform it. :)

We have totally 10 to 11 ml in 20 ml vials.

Since system is new so i think it's sample problem as you are filling sample upto maximum limit of vial.

Reduce sample volume then inject to see consistency..

Do you think that I should have maximum 10ml i 20-mL vial? I vill try to have less sample.