Yeah. I have a call with them scheduled for Friday again. I finally switched all3 reagents for the first time and decided to calibrate with tank water again. I took a jar of water out. Tested it and both salifert and Hanna gave me 8.3. So I ran the calibration with tank water, then ran a combined test immediately after with out removing the supply line from the jar of water I had just calibrated with. Trident returned a result of 6.88dkh. I’m at my wits end with this thing. I’ve also noticed that it’s been making more noise then usual when testing.I have a
similar issue.
Trident running 1.0 dkh lower than salient consistent for months.
so I calibrated off those values with tank water. Cal shows the bump up but then on the next and subsequent tests it’s now showing a dkh of 6.86 when it was at 8 and salient is at 9.0.
Even recalibrated again and same results.
If you are telling the unit the value of the sample is 9.0 (tank water) then when it tests it should read 9.0 (or very close). Not read even lower than before.
Never changed a solution or moved the unit in the process.
I’m going to try to calibrate one more time with their solution that I test with Hanna first and input that number. I just don’t understand why it took the numbers I gave it when I used their solution, and it held. Albeit they were wrong numbers, but they held. When I calibrated with their solution the bottle read 8.45, Hanna/Salifert both read 9.3, but I used 8.45 from the bottle. After that calibration I didn’t run a test with the calibration fluid, I just put the supply line back in my tank, then used Hanna/Salifert to test my tank water. Trident read 0.85dkh lower then my other tests, which is exactly the amount that the calibration fluid tested at compared to my other tests.
So it seems when I calibrate with any other solution (in this case I have tried with Fauna Marin once and my own tank water twice) the trident will read 1.45-1.5dkh lower then the values I tell it.
When I speak with them again on Friday I’m going to mention to them that there are a handful of others that are experiencing this same defect, and it seems to be people who just bought their unit I’m the last few months (I got mine about 2.5 months ago when they were on sale at BRS)