Trident Values Way Off After Reagent Change?

[Xyloxo]

I've had an issue every time I need to change my Trident reagents. The values of all three parameters shift significantly one way or another. I then gave to re-calibrate to get them back close to what they really are. Mind you, I don't use the fluid that comes with the reagents as I feel they are super inaccurate. I use the tank water itself and input the values from my hannas when calibrating. I find this way is much more consistent.

I don't have a problem doing this. I'm just mote curious if anyone else has experienced this.

 

[homer1475]

So your using your tank water to calibrate?

Doesn't sound like a very valid way to calibrate anything.

Would you calibrate your refractometer with your tank water? No you would use the calibration fluid.

Sorry just not very scientific, or a good way to validate any test the trident is giving you.

Ever think maybe the hanna is off, and the trident numbers are correct?

 

[Xyloxo]

Hanna is verified with thier calibration fluid and values are confirmed with red sea tests.

Anyway, that's not the point.