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Originally Posted by Manwithnofish  Correct me if I'm wrong (like that won't happen)...but why is the selection of kH=4 critical?
Would a kH=6.0 as your standard work? As long as you KNOW what the standard value of your solution is, wouldn't it work? Or does the color range ONLY work when the kH=4.0? |
It works best with kH=4. People do use other values. Here is a very good article that explains it:
http://www.barrreport.com/articles/2...s-why-how.html
HTH