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Chemistry Forums for Students => High School Chemistry Forum => Topic started by: BeerGuy on November 13, 2021, 12:27:04 PM

Title: Extending measuring strip reading with dilution
Post by: BeerGuy on November 13, 2021, 12:27:04 PM

Hi all,
It's been decades since I took a chemistry class and I'm trying figure this out. I have a device that uses electrolysis to make hypochlorus acid for disinfecting. I do not know the starting strength of the fresh solution as my test strips only go to 250PPM of chlorine and it will max them out.

Is it simple ratio math to dilute the solution to lower the concentrate? Example: I dilute 5ML of solution with 5ML water and I read 200PPM, my full strength solution is 400PPM? 5ML of solution diluted with 10ML of water = 600PPM at a reading of 200 and so on?

TIA

Title: Re: Extending measuring strip reading with dilution
Post by: Orcio_87 on November 13, 2021, 12:35:32 PM

Quote

Is it simple ratio math to dilute the solution to lower the concentrate? Example: I dilute 5ML of solution with 5ML water and I read 200PPM, my full strength solution is 400PPM? 5ML of solution diluted with 10ML of water = 600PPM at a reading of 200 and so on?

If you are sure that is the final concentration of HClO (200 ppm) then you are right - the math does not lie.