Originally Posted by GlassCornbread
That's all i freaking got tonight when I brewed. I'm not sure these strips change color. I kept adding 5.2 stabilizer salts and nothing happened. probably put in an extra half tablespoon that didn't need to be there. OG of my triple was supposed to be 1.077 and I got 1.070. After three brews of freaking frustrating strips. I've just about convinced myself to buy a digital PH meter. screw the strips!
I bought those same strips a couple of years ago and had the same issue. If they did change, the wort discolored the tabs and made them impossible to read. You can check to see if the strips change via pH by A) try dipping in vinegar and/or B) make a solution of 1 tsb baking soda in water and dipping then. Those should get you extremes on each side. I found that the strips for my hot tub worked better than these did... and quickly moved over to a pH meter.
As for the 5.2 buffer, like the strips, I tossed it out. Spend any time here on HBT and you will see hundreds of comments negative to 5.2 stabilizer. It just doesn't work... and I used it until I watched it NOT work with my pH meter, because I am stubborn like that.
I suggest reading the Brew Water Chemistry
sticky, and follow the recommendations.