The chemical composition of the water needs to be balanced before swimming. If the pH value or chlorine content is not balanced, it may irritate the skin or eyes. Therefore, make sure the chemical composition of the water is balanced before diving. Pool chemical suppliers remind the majority of pool users that after adding pool chemicals, they should pay attention to the safe interval time to ensure that the water quality reaches the safety standard before swimming with peace of mind.
So what is the chemical balance standard in the swimming pool?
Free chlorine content: 1-4 ppm
pH value: 7.2-7.8 ppm
Total alkalinity: 60-180 ppm
Calcium hardness: 150-1000 ppm
Note: There may be differences in the indicators in different regions, which are subject to local actual requirements.
How long after adding pool chemicals can you swim safely?
Chlorine shock:
Waiting time: at least 8 hours
Reason: Chlorine shock has a high concentration and can increase the chlorine content to 10 times the normal level. It will irritate the skin. Test the water quality after the shock and wait for the chlorine content to return to normal. If you don't want to wait, using a chlorine neutralizer to eliminate excess chlorine is a good idea. The chlorine neutralizer reacts very quickly with chlorine. If you splashing it evenly on the water, you can swim in about half an hour.
Hydrochloric Acid:
Wait Time: 30 minutes to 1 hour
Reason: Hydrochloric acid lowers pH and alkalinity. Hydrochloric acid can create hot spots and irritate skin. Wait for it to dissipate before swimming.
SDIC Granules, or Liquid Chlorine:
Wait Time: 2-4 hours or until chlorine levels are in range. If you dissolved the SDIC in water and then splashing it evenly on the water, then waiting half an hour to an hour is sufficient.
Reason: Chlorine needs to circulate and disperse evenly. Test water quality and wait for levels to balance.
Calcium Hardness Increasers:
Wait Time: 1-2 hours
Reason: Calcium needs to circulate through the filtration system to disperse evenly. Avoid pH fluctuations when calcium is mixed.
Flocculants:
Wait Time: Do not swim with flocculants in the pool
Reason: Flocculants work best in still water and need to settle before swimming. Vacuum out settled contaminants.
Clarifiers:
Wait time: half an hour.
Reason: The clarifier adsorbs and bridges the suspended particles, which can then aggregate and be removed by the filter. It does not require still water to work.
Factors that affect wait time?
The nature and type of action of the chemical: Some chemicals can irritate the skin and eyes at high concentrations (such as chlorine), and some chemicals require still water to work (such as aluminum sulfate).
Chemical dosage and water quality: If these chemicals are intended to rapidly change water quality, too much chemical dosage will take longer to decompose. The higher the impurity content in the water, the longer the chemical will take effect, for example, during shock treatment.
Pool water volume: The larger the pool water volume, the smaller the contact area between the chemical and the water, and the longer the action time.
Water temperature: The higher the water temperature, the faster the chemical reaction and the shorter the action time.
How to ensure the safety of swimming pool water?
Choose a regular supplier: When purchasing swimming pool chemicals, be sure to choose a regular supplier to ensure product quality.
Use strictly in accordance with the instructions: Strictly follow the dosage and usage instructions on the product manual.
Regularly test water quality: Regularly use a water quality test kit or ask a professional to test the water quality and adjust the amount of chemical addition in time.
Keep the pool clean: Regularly clean up the debris in the pool to prevent bacterial growth.
Pay attention to safety signs: When adding chemicals or swimming, be sure to pay attention to safety signs to avoid accidents.
After adding swimming pool chemicals, you need to wait for a while before you can swim safely. The specific time depends on the type and dosage of the added chemicals and the specific conditions of the pool. In order to ensure the long-term stability of the swimming pool water quality, it is recommended that you regularly ask professional swimming pool maintenance personnel to conduct comprehensive testing and maintenance. If you want to know more about swimming pool water quality maintenance, you can refer to relevant professional books or consult swimming pool chemical suppliers.
Post time: Sep-29-2024