How to distinguish the quality of the water in the swimming pool
Swimming pool water examination requires professionals to hold laboratory tools to determine whether they meet the standard. Swimming enthusiasts can use the following points as a reference：
1. through visual appearance, we can see whether the water is clear and blue, and visibility is more than 15 meters.
2. the presence of chlorine odor is representative of the organic matter in the pond water. It is properly treated and sterilized completely. There will be no red eye or skin irritation when swimming.
3. foam dissipation time is less than 15 seconds. It represents the replacement rate of pool water and the suitable oil slick treatment.
In order to ensure the water quality of pool water, chlorine disinfection is usually carried out on the pool water, the free chlorine in the water is sterilized to produce chloramine with a stimulating odor, the organic compounds of chloro nitrogen (DBPs), the organic volatiles in the indoor VOCs and the smell of the swimmers, all of which are easily evaporated into the air to make the air. When the body absorbs excess air, it will cause harm to the human body. Therefore, it is necessary to introduce proper amount of fresh air into the swimming pool.
