Error report: You're using *total* chlorine reagent which requires minimum of *3 minutes* to dissolve and mix, but you're looking at the *free* chlorine instructions and mistakenly used that minimum time of *20 seconds* to dissolve and mix. Thus, your reading is wrong. This video needs to be removed and replaced with a corrected procedure. When you do, please also improve the camera work.
It has been a while since I have seen the HACH kits. Each kit has a different test range. You want to pick out a kit that matches what range you want to measure. If the samples you have have a lot of chlorine in it, you may get results using the High range kit, but then if you use the Low range kit, the results you get may be above range for the kit and the meter will just give you an error message. You could do dilutions on your test sample to get within range of the meter, but too many dilutions may increase the error and inaccuracy so best to avoid the dilutions. If I remember correctly the test vials are different in each kit so special glassware washing directions are required. Hopefully someone can expand on this, meaning in what situations each kit is best used. This I do not know
Hi I have not been at school for several years now. I think you should be able to go to the HACH website for a copy of instructions, I remember several different kind of HACH kits so must be careful which one to look for. I remember when I would go to the website of HACH, or maybe it was a different site??, when you look to buy a kit, there is a link to take you to the documents for that kit including directions with pictures
Error report: You're using *total* chlorine reagent which requires minimum of *3 minutes* to dissolve and mix, but you're looking at the *free* chlorine instructions and mistakenly used that minimum time of *20 seconds* to dissolve and mix. Thus, your reading is wrong. This video needs to be removed and replaced with a corrected procedure. When you do, please also improve the camera work.
mg/L is the same as ppm, not ug/L. ug/ml however would be the same 😊
The correct amount for minimum chlorine residual in a distribution system is 0.20 ppm. This water is in violation of safe drinking water standards.
Awesome 👌. Hach for life!
When will use LR and HR? And why?
It has been a while since I have seen the HACH kits. Each kit has a different test range. You want to pick out a kit that matches what range you want to measure. If the samples you have have a lot of chlorine in it, you may get results using the High range kit, but then if you use the Low range kit, the results you get may be above range for the kit and the meter will just give you an error message. You could do dilutions on your test sample to get within range of the meter, but too many dilutions may increase the error and inaccuracy so best to avoid the dilutions. If I remember correctly the test vials are different in each kit so special glassware washing directions are required. Hopefully someone can expand on this, meaning in what situations each kit is best used. This I do not know
Great video thanks
There is a 0.10 error factor using this tester. So it's possible you have no chlorine in that sample.
If you wait longer to test, is the color supposed to get darker?
Not really, it is better to test within 20 to 30 secs of adding our dpd spec reagent for more accurate result.
I use this like twice a week
could you send me a copy of the instructions shown on the video?
Hi I have not been at school for several years now. I think you should be able to go to the HACH website for a copy of instructions, I remember several different kind of HACH kits so must be careful which one to look for. I remember when I would go to the website of HACH, or maybe it was a different site??, when you look to buy a kit, there is a link to take you to the documents for that kit including directions with pictures
Oh no at 4:54 you contaminated the sample bottle. As an operator I am disappointed lol 😉