Trident calibration

[lost66]

I noticed my Trident went up by around 2alk in a single day. I verified by Hanna, I am lower than the reading from Trident.
Does anyone have a clue how to perform Trident calibration but alk only? I don't test MG and CA and don't have reagents. When I perform calibration Trident tests all 3 and gives me test B fail and doesn't calibrate alk.

 

[Reefer Matt Verified Media Partner]

I noticed my Trident went up by around 2alk in a single day. I verified by Hanna, I am lower than the reading from Trident.
Does anyone have a clue how to perform Trident calibration but alk only? I don't test MG and CA and don't have reagents. When I perform calibration Trident tests all 3 and gives me test B fail and doesn't calibrate alk.

You can’t calibrate alk only. You have to have all of the reagents.