Poolplaza.com has hydrochloric acid for $3. It's called muriatic acid, and they use it in pools and spas to reduce pH of water that is too basic. You should use a 5% dilution solution of HCl to soak your ORP electrode for about 10 minutes.
Lowes or any other hardware type store should carry it. I got a gallon of muratic acid from Lowes for like $5. Stuff is great for cleaning impellers but i have been hesitant about using it on ORP or PH probes, is that ok?
The exact dilution is unimportant, but dilution to 5% means 1 part acid to 19 parts water. Anything from 1 part acid to 5-25 parts fresh water is OK, IMO.
What is the concentration of the muriatic acid from Lowe's? Check the label. You need to know that first. It is not going to be 100%. Even concentrated laboratory grade hydrochloric acid is only 38%.
The stuff from hardware stores will be on the order 36-37% by weight HCl. If the intent is to get to 5% HCl, then the dilution is different than saying a "5% dilution". Nevertheless, the exact concentration is unimportant.
A word of caution when using HCL acid. The gas that comes out of it is very potent. Especially when dissolving calcium bits. Dont get any on your skin either , it will burn.
Do not directly inhale the gas. Best to do it outdoors.
I almost passed out from the strong gas when dissolving calcium deposits. :lol:
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.