Specifications Phenol Roure/Red: Indicator solution for Hydrogen Test (PH) Volume: 20mL Orthotolidine OTO: Indicator solution for Chlorine Test (CL) Volume: 20mL Features: - Water Quality Test Kit. For Chlorine Test (CL) and Hydrogen Test (PH). - With a plastic box, easy to storage. - Convenient and practical, easy to carry. Note: Please Keep out of reach of children. Important: Water samples should be taken 18''(40cm) below the surface. Chlorine Test (CL) Information: -Compare your reading with the scale values. -The scale values represented by a number indicate the quantity of chlorine combined with water. -For effective treatment, the reading should be between 1.0 and 1.5 (for ideal) Information: 1- Rinse the test vial and fill to the mark with water sample. 2- Add 4 drops of OTO(Orthotolidine) solution. 3- Place cap on vial and shake to mix. 4- Compare your reading with the scale values. Hydrogen Test (PH) Information: -Compare your reading with the scale values. -The scale values represented by a number indicate the PH condition or alkaliinity of the water. -For comfortable water and a saving of chemical products, the reading should be between 7.2 and 7.6 (for ideal) Analysis: 1- Rinse the test vial and fill to the mark with water sample. 2- Add 4 drops of red phenol solution. 3- Place cap on vial and shake to mix. 4- Compare your reading with the scale values. Package Included: 1 x Water Quality Test Kit Notice: - Due to different producing batches, product details might be a little different. If you minding the difference, please buy it carefully. - Please allow 1-3CM differs due to manual measurement. - Due to the different display and different light, the picture may not reflect the actual color of the item. Thanks for your understanding.