Wide range pH 0-13, great for quick pH checks. Accurate to within one pH unit. Excellent for visual comparative testing. Inexpensive compared to a pH Pen and no time or hassle spent calibrating. One roll lasts a long time so it’s very economical.
This Hydrion Jumbo Insta-Chek Wide Range pH Paper consists of a .5″” by 600″” roll of pH paper, packed in a blue plastic dispenser with an extra large color chart for easy color matching. Provides for approximately 150 tests.