I 've heard that from one friend, and I wanted to ask here because I am not sure if that's true.
Philosophos;43924 said:It's really doubtful. In stock solutions most of CSM+B is SO4 based I believe, outside of the Fe EDTA. The EDTA should stay stable if you work from DI H2O for your stock solutions, and you toss in some HCL or excel.