I've got a box of Fritz RPM (Blue Box) and decided to use for QT. I mixed in 5 gallon buckets and, after mixing for about 20 minutes and letting it sit in a bucket for 3 hours, I checked some parameters. They don't match what the manufacturer states on their website:
Alk - their website 8-9, mine test 7.2
Calcium - their website 400-450, mine test 365
Magnesium - their website 1300-1400, mine test 1155
I mix to 1.025 salinity and they provide the parameters for 1.0264 sg mix. I understand that my readings should be a bit smaller, but not that much!
That could be a reason for the discrepancy? If that was only one test, I would question my test kits. However, all three parameters are much lower...
Alk - their website 8-9, mine test 7.2
Calcium - their website 400-450, mine test 365
Magnesium - their website 1300-1400, mine test 1155
I mix to 1.025 salinity and they provide the parameters for 1.0264 sg mix. I understand that my readings should be a bit smaller, but not that much!
That could be a reason for the discrepancy? If that was only one test, I would question my test kits. However, all three parameters are much lower...