Huge solvent peak with good baseline

[Rmahat]

What is the most contributing cause amongst following in the huge solvent peak?

1. Leaking injector
2. High split ratio
3. Very low sample concentration
4. low temperature at injector
5. Dirty liner

[chromatographer1]

4.

If you mean too large of an injection for #3, then 3 is correct as well, otherwise, just #4.

If #5 was a VERY dirty injection port, lots of junk coating everything, then yes to #5 as well.

Most common cause is a blocked splitter or splitter valve not open at inject time.

best wishes,

Rod

[CE Instruments]

It can also be a very low flow rate due to either blockage or operator error.

[Bigbear]

Don't forget liner "overloading".
You could aso try opening the split vent sooner.

[Rmahat]

I fixed it. I was using low solvent void time. I increased it and it got fixed. Thank you very much for all your efforts.