Chromatography Forum

Posted: **Tue Dec 02, 2008 10:04 pm**

Hello!
I need you help.
The result of my autotune is mysterious.
The mass 69 give 420 000
The mass 219 give 148 000 (35% of 69)
The mass 502 give 15 000 (3.5% of 69)

Habitually, i have
69: 100%
219: 80 - 100%
502: 8 - 10%

My reppeler is high, 34.8 but my source is clean.

What do you think about this problem?

Thank you

Posted: **Wed Dec 03, 2008 9:30 am**

How about the isotopes?
Has calibration compound been used for very long?

Posted: **Wed Dec 03, 2008 2:40 pm**

Hi!
Isotope ratio is o.k......
70: 1%
220:4.6%
503: 10%

Posted: **Wed Dec 03, 2008 5:21 pm**

Hi Rick!

Can you post the Autotune Report and the Tune Evaluation Report?

Chromatography Forum

Tune problem on 5973N

Tune problem on 5973N