SECTION 310:315-7-17. Testing equipment

(a)   Test kits. Test kits are required at all pools to determine free active chlorine and total or combined available chlorine (using D.P.D. reagents), or bromine, total alkalinity, calcium hardness, and pH.

(b)   Cyanuric acid test kits. Cyanuric acid test kits are required at all pools in which cyanurates or cyanuric acid stabilized chlorine products are used. The concentration of cyanuric acid in the pool water shall not exceed one hundred (100) ppm.

(c)   Sodium chloride test kits. Sodium chloride test kits are required at all pools which utilize accepted electrolytic chlorine generators which require sodium chloride concentrations in the pool water. The concentration of sodium chloride in the pool water shall be maintained in the range specified by the electrolytic chlorine generator manufacturer.

(d)   Thermometers. All facilities heating the water to temperatures over 90 °F shall maintain on the premises, in the pool or pool enclosure, a thermometer to take the temperature of the water. Those facilities requiring the ambient air temperature to be monitored shall maintain a suitable thermometer with a Fahrenheit scale at deck level in the pool room to monitor air temperature.

(e)   Test kits, spas. In addition to fulfilling the foregoing requirements of this section, spa facilities shall be equipped to test for concentrations of total dissolved solids, copper, and iron.