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Q: How is total residual oxidants related to total residual chlorine?
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What is total residual chlorine?

Total Residual Chlorine (TRC) is the total of free available residual chlorine and combined (bound) residual chlorine. The amount of measurable chlorine remaining after treating water with chlorine i.e. amount of chlorine left in water after the chlorine demand has been satisfied


What does DPD stand for in chlorine testing?

The reagent used in determining free and total chlorine residual for disinfection of drinking water. The chemical name of the reagent is NN Diethyl-p-Phenylenediamene.


What is the difference between free chlorine and total chlorine?

Combined chlorine is when the chlorine molecule has attached itself to other molecules in water. In other words it has "combined" with something else in the water. Those could be iron, manganese, ammonia or other things depending on the source water. Free chlorine is the molecules that are "free" in the water to do the disinfection.


What is total residual volume?

It's (RV) = 1.2...


What if your total chlorine is high and your free chlorine is low?

You need to shock the pool. The difference between Total Chlorine and Free Chlorine is tied up and it will be cleared by shocking. Thatis the purpose of shocking.


What does it mean when your free chlorine is higher than total chlorine?

Technically no. Your total chlorine reading would include all forms of chlorine, which we tend to lump into to basic categories, Free and combined. If you get readings that show that the free amount is higher then total, I would suggest a retest. If you are still getting the same result, I would try another test or different reagents. I'm sure there might be something that could give you false results and that might be what id happening in this case. Actually it can happen because it happened to me today i saw it happen that the free chlorine was 2.49 and after the 2 minute waiting period the test was 0.33 and the sample was visibly less pink than when the DPD 1 was tested, there has to be some reason for this or some way to fix it as if we are using the same reagents for other samples and it is working for those then this must mean that there is something wrong with the water i a, testing and not the tablets i am testing with! The total reading after time will drop if the residual level is high enough and there is not enough DPD. Hach recommends for using a 5 ml sample instead of 10 ml and 2 power pillows instead of 1. This gives four times the DPD to do the analysis. With very high levels you can see a flash of dark color and then go to clear as the chlorine bleaches the color from the DPD. The addition of extra DPD overcomes the bleaching effect.


What is chlorine Analyzer?

A Chlorine Analyzer analyzes free chlorine or total chlorine in water to monitor chlorine dosage. It is frequently used in water and waste water plants to control chlorine dosage.


What does total lung capacity equals?

Total lung volume equals Vital Capacity + Residual Volume.


What do you need to do if your free chlorine level is higher than your total chlorine level?

Get a new test kit or new test reagents. Total Chlorine is the measure of free and combined chlorine, therefore the free chlorine cannot be higher than the Total Chlorine. You can't put 10 gallons of water in a 5 gallon bucket.


What is the total charge of chlorine?

-1


How do you get high free chlorine to match total chlorine?

Total Chlorine = Free Chlorine + Combined Chlorineor, put another wayTotal Chlorine - Free Chlorine = Combined ChlorineFree 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 = 1.5ppmFree Chlorine = 1.0ppmSo, the Combined Chlorine (the difference between the two tests) is .5ppmBreakpoint 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 do you do when your total chlorine is high and your free chlorine is low?

Total Chlorine = Free Chlorine + Combined Chlorineor, put another wayTotal Chlorine - Free Chlorine = Combined ChlorineFree 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 = 1.5ppmFree Chlorine = 1.0ppmSo, the Combined Chlorine (the difference between the two tests) is .5ppmBreakpoint 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.