RHF Trace Elements: Fe and Mn testing

[NanJ]

Randy wrote a very helpful article about trace elements. In it he mentioned testing for iron and manganese would be a good place to start. Has anyone tried Hanna Instruments tests for these elements? On their website they do not market their iron and manganese testers in the marine section which makes me think the testers should not be used with saltwater samples.

Any recommendations for iron and manganese test kits?

 

[Randy Holmes-Farley]

I don’t know of any at home iron or manganese tests that are good enough.