Soothing Shrimp Posted September 28, 2016 Report Share Posted September 28, 2016 Do any of you know what chemical the green API GH is? Quote Link to comment Share on other sites More sharing options...
Shrimple minded Posted September 28, 2016 Report Share Posted September 28, 2016 triethanolamine ? http://www.apifishcare.com/pdf/3338_GH_Test_Solution_Documents_MSDSVendors_2014_February_04_09-48-16-198_AM-1.pdf (page 2, halfway down) EDIT: Looking at the wiki for triethanolamine I'm not sure that's what your looking for: https://en.wikipedia.org/wiki/Triethanolamine I would imagine the EDTA is just used as a preservative. Quote Link to comment Share on other sites More sharing options...
Soothing Shrimp Posted September 28, 2016 Author Report Share Posted September 28, 2016 Hmmm...I'm not sure either. I go through a lot of it, and was wondering if I could get the chemical in bulk to save money. Quote Link to comment Share on other sites More sharing options...
Nubster Posted September 28, 2016 Report Share Posted September 28, 2016 Are you using it to test your RO water mix or tank water? Quote Link to comment Share on other sites More sharing options...
Soothing Shrimp Posted September 28, 2016 Author Report Share Posted September 28, 2016 Tanks Quote Link to comment Share on other sites More sharing options...
Stitch Posted September 28, 2016 Report Share Posted September 28, 2016 EDTA is being used for the titration and triethanolamine is the preservative. They also use a indicator for the color change. Shrimple minded 1 Quote Link to comment Share on other sites More sharing options...
Soothing Shrimp Posted September 28, 2016 Author Report Share Posted September 28, 2016 Any idea of the indicator? Quote Link to comment Share on other sites More sharing options...
Stitch Posted September 29, 2016 Report Share Posted September 29, 2016 Just checked pH value for before and after the color change. Both were pretty high, so I think the indicator used is thymol blue. Soothing Shrimp 1 Quote Link to comment Share on other sites More sharing options...
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