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What is the typical ISTD Recovery Outlier Setting Range and what do you do when the ISTD is outside that range for one of your samples?

Question asked by scottz on Feb 12, 2020
Latest reply on Feb 13, 2020 by edgarvs

We have currently set the ISTD Recovery % range to 80% to 120% on our ICP-MS.  For some of our samples this range is exceeded.  Should we dilute the sample and rerun it?  Can we switch the ISTD to another that is within our 80% to 120% range, but maybe has an ionization potential that isn't as well matched?  Can we use a wider ISTD Recovery range?  What is the standard practice for this situation?