King Technology Frog Test Strips (50 Count), 01-14-3318

These are the King Technology Frog test strips, 50 to a bottle, listed as a 5-way strip. They cover pH and total alkalinity along with sanitizer ranges of 0.5 to 1 ppm and 1 to 2 ppm.

Why the range matters

A Frog mineral system does most of the sanitizing work with minerals and only needs a small amount of chemical sanitizer on top. That is the point of the system, but it also means the water is meant to test far lower than a conventional pool or spa. Strips printed for ordinary chlorine levels do not have usable marks down at 0.5 ppm, so a correctly running Frog reads as though it has nothing in it. These strips are scaled for that low band.

Using them

Dip a strip, hold it still, and compare it against the chart on the bottle. Keep the cap closed between tests, since the pads are sensitive to humidity and a bottle left open loses accuracy long before the 50 strips are gone.