Extra data

Quantity: 50 units
Test time: 3 seconds
Detection levels:
- 0, 40, 80, 120, 180, 250, 425,1000 ppm(mg/L)
- 0, 2, 5, 7, 11, 15, 25, 58 pgp

With total hardness water quality test strips you are in control
and can find out exactly the amount of minerals (calcium, magnesium,
calcium carbonate, magnesium carbonate) present inside the water.
The value is expressed in French degrees ppm.