Why do my test strips and the tests at the pool store show very low chlorine when the Purezone shows very high chlorine?

• Test strips and pool tests from Leslie's, Pinch-a-Penny and others "bleach out" when the water sample is heavily chlorinated i.e. FC 10ppm or higher and will not display accurate values for FC
• Purezone's FC test pads do NOT bleach out and will display accurate higher FC values for spas with very high FC levels
• Purezone's FC test pads will display up to a maximum of FC 25.4ppm.  The FC is capped at the upper limit of 25.4ppm.  
• If the Purezone consistently displays an FC level of 25.4ppm, the actual level could be much higher

How do I resolve the High FC issue for my Inline Chlorinator spa?

• Inline Chlorinator spa owners may need to adjust their Inline Chlorinator so it releases less chlorine
• Inline Chlorinators have a dial valve to adjust how much chlorine is dissolved in the chlorinator for dispensing to the spa water. 
• Adjusting the Inline Chlorinator to release less chlorine should resolve the issue
• If the level of FC in your spa is extremely high, you should shut off the Inline Chlorinator until the FC level is in the normal range
• If the FC does not lower, after you adjusted the Inline Chlorinator to release less chlorine, you may need to verify that the Inline Chlorinator is functioning correctly
• Note:  The expected life of a high quality Inline Chlorinator is between 2 to 5 years before needing replacement