NEVER OUTGUNNED
Active Member
so i was calibrating my oakton "eco testr" tds pen using the hanna 1500ppm single use foil pouch because they were out of the Gh 1500ppm solution. it said my pen was roughly 200ppm over what it should be so i calibrated anyway.
today i picked up some of the GH calibration solution and when i use it to test my pen it read way over!!
has anyone had this issue? is the calibration solution pen specific?
shouldnt 1500ppm solution be universal? WTF??
today i picked up some of the GH calibration solution and when i use it to test my pen it read way over!!
has anyone had this issue? is the calibration solution pen specific?
shouldnt 1500ppm solution be universal? WTF??