How can I keep my Continuous Calibration Verification (CCV) constant during ICP-MS 7500ce run?

Discussion created by dlindsey on Oct 7, 2020
Latest reply on Oct 8, 2020 by mabalski

I have tried warming the ICP-MS for 30 minutes with no success.  I am testing for Heavy metals (arsenic, cadmium, mercury, and lead).  After 20 samples the calibration point started with does not hold up to 15 percent tolerance difference.