Check the listing for details. Sirona Spa Care Test Strips - 2 Pack. Condition: New. Listed at 23.98 USD. The Sirona Spa Care Test Strips offer a convenient and rapid method to test your spa or hot tub treated with Sirona Spa Care products. Each strip assesses Free Chlorine, Bromine, Total Alkalinity, pH, and Calcium Hardness levels. Product Features: Test Strips are compatible with chlorine and bromine sanitizers Tests spa and hot tub water in just 10 seconds, so you can find spa solutions before problems arise Quickly, easily and accurately tests for alkalinity, calcium hardness, pH and chlorine or bromine Recommended levels: pH 7.2-7.8, total alkalinity 80-120 ppm and calcium hardness 150-400 ppm Sirona Specialties maintain restorative spa water and transform every spa into a soothing sanctuary Directions: Immerse strip for 2 seconds. Remove with pads face up. Shake once to remove excess water. Read immediately and compare to color chart.