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Table 2: pH of Various Chemical Products for Pools
Chemical pH
Chlorine
Trichlor (pucks) 2.5-3.0
Sodium Dichlor 6.8-7.0
Lithium Hypochlorite (powder) 10.7
Calcium Hypochlorite (cylinder) 11.8
Liquid Chlorine 13
Bromine (tabs) 3.6
pH Regulating Products
Muriatic Acid 0.1
Dry Acid 1.4
Cyanuric Acid 3
Sodium Bicarbonate 8.3
Sodium Sesquicarbonate 10.1
Soda Ash 13
we suggest having the pool water tested by a professional (often free of charge) once a month.
The water of the pool or spa must be maintained within the standards included in this
manual. Any negligence to do so, will void the warranty. These standards are from the
NSPI and are common throughout the swimming pool industry; they are not particular to Turcotte
heat pumps.
The most important factor for the durability of the pool heat pump is the pH because the
capability of the water to cause the degradation of metal is directly related to it. Let’s also
mention that TA is the measure of the capacity of water to resist to pH variation; therefore it is as
important. Taylor, an important manufacturer of pool water test kit for professionals states:
“Corrosive water will dissolve copper piping and heat exchangers and leave stain on
pool walls.” [Taylor, A Testing & Treatment Guide part #2004B, p.35]
“The result is a highly unbalanced water condition resulting in damage to copper heat
exchangers, light rings, stainless steel ladders an concrete pool surface.” (Talking about
acidity and low TA) [Taylor, A Testing & Treatment Guide part #2004B, p.11]
Below is a chart presenting pH associated to concentrated solutions of various chemical
products for pools.