Indicator Paper, Cobalt Chloride, Book(20 leaves) (Pack 10)

Our Cobalt Chloride Test Paper can quickly and economically measure the presence of relative humidity in the atmosphere. The paper is directly exposed to the atmosphere and turns from blue to pink upon contact with relative humidity greater than 2%. These papers are traditionally used in school experiments
Available in various sheet sizes.
20 leaves per book, 10 books per box.