I recently heard about using PH Down which is a pool chemical in a bath for removing scale on forged items. Anyone tried this and if so in what concentrations? I assume the results would be similar to vinegar as it would be acidic?

Thanks,

Pat

The product name gives it away.

"pH down" probably connotes a solution that would lower the pH. and make it more acidic. pH 7 is neutral and pH 7 and up is a basic solution. Acids lower the pH so it is a good bet that the product has acid in it. (i.e. pH 6 to 1 is acidic). Clear as mud what hey?

SLAG.

As I recall it was something like sparex #1 and if it's going to change the properties of 100's of gallons of water it probably is fairly strong when sourced.  Have you checked the MSDS for it?

sodium bisulfide

 

Brian Breazel mentioned using it in one of his videos. I know nothing about pools and what the product is actually used for so you guys are probably correct. I'm willing to try it out but I'm not chemist and I want to be as safe as possible.

MSDS for pooltime pH down says:

SECTION 3. COMPOSITION/INFORMATION ON INGREDIENTS Hazardous components Component CAS-No. Weight percent

sodium hydrogensulphate 7681-38-1 90 - 95 %

sodium sulphate 7757-82-6 4 - 10 %

MSDS for Proteam pool care:

Ingredient  

Sodium bisulfate

 Sodium sulfate

NOTE: Sodium bisulfate, also known as sodium hydrogen sulfate