Made some hot peppers from my garden and wanted to make sure they were at the right pH level for preservation. While it works fine, I don't have anything else to verify the paper's accuracy, but I'm sure it's good enough for something like this. I like the holder very much. it is configured so that you will never lose paper in the holder. Twist to lock and take the piece out and it will leave some tape so you can pull out more and more. The only downside is that it gives you a green thumb (I hope it makes my garden better). Next time I'll just wear gloves. It also arrived in half a day which was nice.
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