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Total Chlorine = Free Chlorine + Combined Chlorine
or, put another way
Total Chlorine - Free Chlorine = Combined Chlorine
Free Chlorine is the chlorine that is doing its job.
Combined Chlorine is the chlorine that has combined with contaminants such as nitrogen. It is ineffective as a sanitizer and it is noxious.
Total Chlorine is the total of these two levels.
To eliminate the Combined Chlorine (making all the chlorine in the pool Free Chlorine) you must shock the pool to remove the contaminants. You must reach "Breakpoint Chlorination", which is the addition of chlorine to your pool equivalent to the Combined Chlorine level times 10.
example:
Total Chlorine = 1.5ppm
Free Chlorine = 1.0ppm
So, the Combined Chlorine (the difference between the two tests) is .5ppm
Breakpoint chlorination, in this example would be .5ppm X 10 = 5ppm. So, in this example, you would add enough chlorine to your pool to raise the chlorine level up by 5 parts per million.
What else can I help you with?
What chemical do you add when free chlorine is low?
You can add chlorine-based chemicals such as chlorine granules or liquid chlorine to increase free chlorine levels in the pool. Follow the manufacturer's instructions and allow time for the chemical to circulate before testing the water again.
Does chlorine have a high melting point low boiling point etc?
Chlorine has a low melting point of -100.98°C and a low boiling point of -34.6°C.
Why is pool Ph low and chlorine high though you have not put chlorine in for weeks?
Low pH in a pool can cause chlorine levels to appear higher due to the pH affecting the effectiveness of the chlorine. The pH imbalance may also be due to factors such as organic debris or algae growth consuming chlorine, leading to a false high reading on the test kit. It is recommended to shock the pool to address any organic contaminants and rebalance the pH to maintain proper water chemistry.
Which statement explains why low temperature and high pressure are required to liquefy chlorine gas?
Low temperature decreases the average kinetic energy of chlorine gas molecules, reducing their motion and allowing them to come closer together to form a liquid. High pressure increases the frequency of molecular collisions, facilitating the formation of intermolecular forces necessary for liquefaction. Together, low temperature and high pressure create conditions where the attractive forces between chlorine molecules can overcome their kinetic energy.
Why do low temperatures and high pressures required to liquefy chlorine gas?
Low temperatures are required to reduce the kinetic energy of the chlorine gas molecules, causing them to come closer together and form a liquid. High pressures help to further compress the gas molecules, increasing their attraction and facilitating the liquefaction process. Together, low temperatures and high pressures create conditions where the intermolecular forces dominate over the kinetic energy, allowing the gas to turn into a liquid state.
What if your total chlorine is high and your free chlorine is low?
If your total chlorine is high and your free chlorine is low, it means that the chlorine in the water is mostly bound to contaminants and is not available to sanitize the pool effectively. This situation could result from the chlorine being overused or ineffective due to high levels of organic matter. To correct it, you may need to shock the pool to break down the combined chlorine and restore the free chlorine levels.
Cloudy pool free chlorine is not reading stabilizer is low but pH is ok?
Add chlorine and stabilizer.
What if both total and free are very low add shock or tablets?
Yes, add both before the pool turns green. Make sure that you are using a liquid test kit, because the strips always show chlorine as too low unless it is too high. Hatawa
What chemical do you add when free chlorine is low?
You can add chlorine-based chemicals such as chlorine granules or liquid chlorine to increase free chlorine levels in the pool. Follow the manufacturer's instructions and allow time for the chemical to circulate before testing the water again.
What if both your free chlorine and total chlorine is low?
Add more chlorine. More to it than that. Test & if necessary correct the pH first - that's important. Calculate correct dose rate of chlorine & add accordingly. If it's an outdoor pool switch to stabilised chlorine if not already using it.
Does chlorine have a high melting point low boiling point etc?
Chlorine has a low melting point of -100.98°C and a low boiling point of -34.6°C.
Does chlorine have a high boiling point?
No. Chlorine has a very low boiling point considering that it is a gas at room temperature.
The bonds in NaCl form because?
Because sodium has a low electronegativity and chlorine has a high electronegativity; sodium become a cation and chlorine an anion.
Does chlorine have a high electron affinity or a low ionization energy?
Chlorine has a high electron affinity due to its tendency to gain an electron to achieve a stable electron configuration. It also has a relatively low ionization energy, meaning it takes less energy to remove an electron from a chlorine atom compared to other elements.
Low free chlorine?
Try a water conditioner, designed to help your water hold on to chlorine longer. Sometimes a non-chlorine shock can help condition the water to help stabilize your chlorine levels. Could be high heat, phosphates, nitirites, nitrates, or aggressive water. If it's cloudy, a little green, a serious dose of shock may be enough to stabilize it.
Why is the free chlorine level so low even after running the chlorine generator continuously for days?
Could be your PH is not in balance making it seem there is no chlorine, Your salt lavel needs be between 2700 and 3200 ppm. Your Alkalinity may be too far off the scale. Your hardness may be to high and lastly you may have to many phosphates in the water that are consuming the chlorine.
Is chlorine odorless?
No. It smells like bleach, in high levels it can be extremely harmful to the respiratory tract and in high concentrations fatal.
