Atlas Scientific Calibration Solution 125Ml Review

Easy calibration. Turns out my pH meter was off at 0.4. Ouch! The only difficulty was finding a container small enough not to use more than necessary. The measuring cups that come with the medication helped, of course. With these you can get about 3 or 4 uses from 1 vial. Definitely recommend instead of powdery stuff

One of the two buffer solutions leaked a little but went into a sealed protective pouch so there wasn't a big mess. The sealed foil on the bottle did not appear to be in place, resulting in a leak. The inner liner of the cap (lined cardboard liner) was wet and not damaged by leakage. The solutions were good - within 1% of my previous batch from a major lab supplier.

Complete rubbish, don't waste your money. I used them to calibrate my new brewing pH meter and spent two weeks trying to figure out why my pH levels were about 0.4 lower than my software predicted. I narrowed it down to my pH meter, so I recalibrated my meter with Milwaukee calibration solutions and then tested the pH of these buffers, 4.32 for pH 4, 7.22 for pH 7. Bullshit! So I kicked her out last night. . Listen to other reviewers who said it's far, buy something else!