This Zodiac Twist & Dose large home pool test kit makes it really easy to test your pool water to find out quickly how much chemical to add to keep their water clean & healthy. It is a simple to use, yet intelligent, test strip reading device that tells you which chemicals to use and in which quantities to keep your pool healthy and balanced.
Twist & Dose tests three key parameters of the pool water: total alkalinity, pH level and free chlorine. Just twist each of the three yellow rings starting from the top to match the colour of the Twist & Dose 3-in-1 test strip pad with the colour for total alkalinity, pH and free chlorine. Then turn around the Twist and read the dosages of chemicals to add to the water for a healthy pool.