Home Cosmetic Science Talk Formulating General How much EDTA is needed to make 700 TDS hard water soft?

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  • How much EDTA is needed to make 700 TDS hard water soft?

    Posted by Abdullah on November 19, 2022 at 5:48 am

    Water hardness is 700 TDS where i live. To make this hard water soft, how much EDTA is needed in a solution with pH~8 in ppm? 

    Abdullah replied 1 year, 5 months ago 2 Members · 2 Replies
  • 2 Replies
  • PhilGeis

    Member
    November 20, 2022 at 1:57 pm

    Can’t answer that question but there are EDTA methods for determining hardness - perhaps execute with reverse intent.

  • Abdullah

    Member
    November 21, 2022 at 2:48 am

    PhilGeis said:

    Can’t answer that question but there are EDTA methods for determining hardness - perhaps execute with reverse intent.

    I have TDS meter. Isn’t that accurate to determine water hardness?

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