Does the CYA Reagent R-0012 go bad?

[ozdiver]

Got some odd results and cannot explain them so over to the experts...
New plaster pool being started up over last 2 weeks.
Checked this morning:
FC 2
pH 7.7
TA 30
CH 325
CYA 0

Added 64 oz Mutiatic Acid to start bringing up CYA
Left it for a couple of hours

pH 6.8
CYA as near to 0 as I can tell.

I filled to bottom of label, added R-0012 to top of label, shook for 30 sec or more.
Slowly filled cylinder and I can still clearly see the black dot.
Left it for a few minutes, still visible.
Very little precipitate.

The pH swing shows that the acid is there, but not showing up in CYA test.

Could my R-0012 be bad, new kit and I have not got a reading with it yet?


I'm obviously heading off to get some Borax to raise the pH to a more reasonable level.

 

[mtfanning]

MA lowers PH, which your test proves. You need stabilizer to raise CYA.

 

[Bama Rambler]

R-0012 is a calcium hardness reagent. The CYA reagent is R-0013. It's a pretty stable reagent so unless it's very old I wouldn't suspect that it's bad.

 

[ozdiver]

Sorry, meant 13.
But using Muriatic rather than Cyanuric acid is my senior moment for the day.
Thks