And yes I have due to what I thought to be an errant Triton test that showed a bunch of arsenic out of nowhere (this was later confirmed by Triton to be due to a calibration issues). Anyways, I sent in for an ATI test a week or so later to confirm. Attached are both reports from June 2nd and June 8th of 2018 if you're curious. I don't do water changes so the water chemistry should be reasonably the same across this week difference in collection. Certainly some differing values among the reports...