Kill Power: A Smarter Way to Measure Pool & Hot Tub Water Chemistry

Most pool and hot tub owners set a weekly schedule to measure and balance their water, requiring test strips, tables, interpretation, and calculation before chemical dosage. But the pHin team developed a smarter way to measure, they call it “Kill Power.”

Rather than measuring the specific levels or parts per million (PPM) of the sanitizer that is in the water, a Kill Power rating is an analysis that focuses on ORP (oxidation-reduction potential) that shows how effectively the sanitizer is doing its job, for chlorine, bromine and saltwater sanitizers.

Proper ORP levels are important for understanding the effectiveness of your chemicals. OPR sensors within the pool and hot tub water will have a voltage created between them from the electrons in the water, measuring the ORP reading. If the chemicals aren’t bonding properly, sanitizers become less effective. When ORP is low, the chlorine has a hard time keeping up with the bather load and additional adjustments are needed to get the pool balanced.

When ORP is high, the water’s cyanuric acid levels are also high which is the number one factor that can prevent sanitizer from working effectively. Factoring ORP levels in overall pool and hot tub water readings allows for a detailed analysis of the cleanliness of the water and its ability to break down contaminants.

How pHin measures “Kill Power”

pHin constantly measures the pH, sanitizer, and temperature of pool, hot tub, and swim spa water. Kill Power is measured electronically through the pHin monitor’s sensors, and is used as a factor when calculating chemical dosage recommendations that users see in the app.

When taking measurements, pHin analyzes the ORP level of the water to make sure the sanitizer is doing its job to keep your pool safe. pHin has built-in algorithms that analyze the water samples over time. With this data, pHin simplifies the chemical dosing process for pool and hot tub owners by providing easy to understand chemical instructions for balancing the water.

pHin factors your pool or hot tub’s Kill Power/ORP level into all measurements and makes it easy to read with a color-coded system, so you can always know whether your pool or hot tub is safe. 

For accurate pool and hot tub water readings, check out pHin on Amazon.