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Experiment supplies: it is lightweight, compact in size, convenient for carrying or storage in a pocket.
Alkaline acidic paper: phenothalin paper is used to test alkaline and acidic substances, fast and accurate.
Alkaline substance paper: the excellent workmanship of our product will bring you a good using experience.
Phenothalin paper: this set includes enough quantity of test paper to meet your different needs.
Ph indicator strips: our phenothalin paper set is one of the and a good experiment tool for you.