When the molecular ion peak is not visible what can I do? clear cromotogram is obtained for HPLC.
Find maintenance, best practice, and troubleshooting articles.
When the molecular ion peak is not visible what can I do? clear cromotogram is obtained for HPLC.
Had a researcher with this problem on a GCMS, and tailored the tune to weight the 502 heavier. With LCMS it could be an ionization issue, need to know your analyte pKa and the pH of the eluent to ensure your 99% ionized.