Quote Originally Posted by Wolfgang Moersch View Post
Ralph

If you prefer a low pH level HCA try this

EDTA4Na 12g or DTPA pentasodium salt (solution) 25ml
Sodium sulfite 200g
Sodium bisulfite 6g
Sodium citrate 4g

to make 1000ml stock solution
dilute 1+9 for working solution

Wolfgang Moersch
www.moersch-photochemie.de


I didn't realize that much sodium sulfite would disolve in water. Couldn't you make this more me? I'm just on the other side of town.