Specification: Condition: 100% Brand New Housing Material: Plastic Red Phenol: Hydrogen Test Indicator Liquid (ph) Volume: 20ml O-toluidine: Chlorine Test Indicator Liquid (Cl) Volume: 20ml Product Size: Approx. 15*7.3 cm / 5.9*2.9 in Chlorine Test (cl): Information: 1. Compare your reading with the scale values. 2. The scale value represented by a number indicates the amount of chlorine combined with water. 3. For effective treatment, the reading should be between 1.0 and 1.5 (ideal). Information: 1. Rinse the test vial and fill it with water sample to the mark. 2. Add 4 drops of OTO (o-toluidine) solution. 3. Cover the bottle lid and shake to mix well. 4. Compare your reading with the scale value. Hydrogen Test (pH): Information: 1. Compare your reading with the scale values. 2. The scale value represented by a number indicates the pH condition of the water. 3. For comfortable water and a saving of chemical products, the reading should be between 7.2 and 7.6 (ideal). Analysis: 1. Rinse the test vial and fill it with water sample to the mark. 2. Add 4 drops of red phenol solution. 3. Cover the bottle lid and shake to mix well. 4. Compare your reading with the scale value. Package list: 1 * Pool Water Test Kit