Chlorine, pH & ta Testing Strips
Surex Test Strips the latest in pool water testing. A handy pack of 50 Test strips , each strip is simply dipped into the pool or spa water, held for 15 seconds then colour co-ordinated to a chart on the tub which indicates Low, OK or High. Then apply appropiate steps for Balancing. Applied generally every 1 - 2 days  - please follow your guidelines on label for application