AquaChek Total Hardness Test Strips for spas & pools measure calcium and magnesium, the 2 primary minerals of water hardness. Low hardness can be corrosive to a spa's metal components and can cause foam. High hardness causes scale and cloudy water.
- Total hardness
- Low range (up to 120 ppm)
- High range (from 250 to 1,000 ppm)
- 25 test strips
Product notes: Record test results in our Spa Log Book (below).
Super easy to use and read. Highly recommended
I was curious what my water hardness was. These test strips seem to work pretty good.
Did what it was supposed to do
very pleased wit h product