
I don't usually buy test strips because I find them very imprecise compared to titration. I was having serious problems with the iron in my pool and didn't want to afford expensive metal test kits so I decided to give them a try. Even though I can see iron, smell iron, and know iron is in my pool, these strips still show 0 ppm.

TDS water quality tester - TDS water hardness meter (portable digital salt meter for water analysis)
9 Review

π PH 1-14 Extensive Storage Testing Monitoring: Optimize Your Storage with Precise pH Level Monitoring
6 Review

Accurate And Versatile Digital PH Meters For Food, Brewing, Hydroponics, Pools And More!
7 Review

Efficiently Test Your Antifreeze And Battery Acid With A 3-In-1 Refractometer
18 Review