based on this recently published article https://www.reef2reef.com/ams/how-we-use-icp-oes-results-of-unknown-accuracy-and-precision.862/
I will be switching ICP testing from month to month to various vendors as does not look like we can rely on any vendor (bummer)
I will be switching ICP testing from month to month to various vendors as does not look like we can rely on any vendor (bummer)