Function: 1. Accuracy testing: ma water quality testing powder 96% accuracy in detecting cola bacteria in feces in drinking water, it is reliable and professional. 2. Easy to use: Simply pour 40 ml water samples into the bottle and tighten the lid, mix with the powder, and wait for the test result. 3. Widely used: suitable for testing various water sources, including household tap water, swimming pools, aquarium, wells and fish ponds. 4. Reliable professional: Water quality testing powder with a shelf life of 2 years, this powder is a reliable choice for regular water quality testing. 5. Instant results: The results can be obtained within 48 hours, making it a quick method to detect the presence of cola bacteria in the feces in the water Specification: Item Type: Drinking Water Test Kit Consistency: powder Accuracy: 96% Shelf life: 2 years Test element: fecal coliform bacteria Application: For drinking water, home tap water, water purification, swimming pools, fish pond water and other water quality tests. Test time: 48 hours. List of packages: 1 x Test Powder 1 bottle User manual: 1. Pour 40 ml of water samples into the bottle and tighten the lid. 2. Shake the bottle up and down until the powder dissolves. 3. Wait 48 hours. 4. If, after the test time, the test result is yellow, it means that the sample does not contain bacteria from the cola group in the faeces. If the result is dark yellow or bluegreen, it means that the water contains bacteria from the cola group in the feces.