USING HANNA CHECKER HI-707 TO TEST FOR IODINE

can we get a formula to use the Hanna hi774 ulr phosphate checker, like we did on the diy potassium test? Would save people money as they’re much more likely to already have that one. Thank! Great work!!

Measured 0.020 with your test, and pulled a sample for ICP testing. ICP came back at 0.019. Very impressive, great work!

Wow! Nice write up! Ordering the Nitrite tester now. Looking forward to trying this.

Great work - anything that can get these titration tests to a discrete numerical value is the way to go!