1. Observe the color. If the residual chlorine content is normal and the water quality is good, the swimming pool water covered with white tiles will appear bright light blue. Some swimming pools use light blue tiles, which will have a dark blue effect. If the water is white and a little turbid, it may be that the bacteria exceed the standard. 2. Look at the certificate: when you walk into the hall of a qualified swimming pool, you can see the Hygiene Permit for Public Places issued by the health administrative department hanging in a prominent position at the ticket office, which is a place where swimming is allowed. 3. Check the checkpoint: In summer, there is a red-eye checkpoint at the entrance of the swimming pool, and the inspector will carefully check the eyes of every swimmer who enters the swimming pool. If there are patients with pink eye, the staff should advise them not to enter the swimming pool.
4. Seeing the clear and turbid pool water is clear and transparent, which is easy to see at a distance of 20 meters from the pool water; If there is no sediment at the bottom of the pool, the foam dissipation time of the pool water is within 15 seconds, which indicates that the pool water is cleaner after replacement. If the swimmer can't see15m in the water, the water quality is generally unqualified. 5. Look at the facilities: After the swimming pool is changed regularly, you must enter the swimming pool through compulsory shower and foot bath disinfection pool with high residual chlorine. The foot bath disinfection pool is the same width as the walkway, with a length of not less than 2m and a depth of not less than 20cm. The water in the pool is changed every four hours, and chlorine can be smelled at the same time. Slippers in the swimming pool must be disinfected by guests.
Use? Do you see it? And then what? Smell? A simple judgment method. So-called? Do you see it? Is to see the water with your eyes first. It should be clear, transparent and transparent; There is no floating dust and sundries on the water surface. When you walk through the water from the swimming pool, you can see the fourth and fifth lanes. If you can't see them, it means that the water is turbid and there is sediment at the bottom of the pool. This water is definitely unqualified. So-called? Smell? Refers to the odor of residual chlorine (bleaching powder) in the pool water after approaching the pool water; However, it has a strong irritating smell, and the disinfectant may be excessive, which will stimulate the human mucosa.