🧪 Micro Essential Lab Polystyrene Dispenser - Enhanced Testing, Measuring, and Inspection Solution Review

I also have an electronic meter so I can determine how accurate these paper indicators are. They fit the "strongly alkaline, weakly alkaline, weakly acidic, strongly acidic" scale, but that's about it. Forget about using them to see if you're close to neutral or some other quantitative pH.

pH paper is good enough. Pretty accurate and good solid case/dispenser. When I first used it I thought it wouldn't work because the strips don't change color when placed in known acidic or alkaline solutions. It turns out that the first few inches of the opened strip were probably exposed to the air for too long during storage etc. No problems after that and fairly accurate pH results.

For the price they worked very well. They were needed for a project ((tested the pH of a face serum I was making) and they got the job done. The main caveat for me was that I didn't find them as accurate as needed for skin testing..acidity levels are of great importance for this purpose and the lack of accurate measurements can be an issue. This is not necessarily reflected in the product, just a recommendation that you buy wisely for your projects.