Alk calibration fluid (?)

ZoWhat · Jan 1, 2019

My Salifert Alk driptest kit and my Hanna Alk Tester are 3-4 dKH off from each other. Not sure which one is closest to the true number.

Is there an Alk fluid i can buy to test? Where?

For example: a bottle of fluid tested to exactly 8.0 dKH

DSC reef · Jan 1, 2019

skimjim said:
My Salifert Alk driptest kit and my Hanna Alk Tester are 3-4 dKH off from each other. Not sure which one is closest to the true number.

Is there an Alk fluid i can buy to test? Where?

Does most tap water out of the faucet usyally have a certain Alk? That i can test with?

Each company offer verification fluids and they actually come with the test kits....