Book-style pH test paper pH1-14 20 sheets x 4 books TPHB-1 1 pack (80 sheets)

It is a book style that can be torn off one by one and used. A color chart is included. This is for 80 tests. For measuring pH of aqueous solutions. Cannot be used with pH standard solutions or strongly acidic solutions. Store in a dark, dry place. Width (mm): 9 - Length (mm): 54 Measurement range: pH 1 to 14 Measurement scale interval: pH1 Book Style Material/Finish: Test paper: Paper Country of Origin: China Code number: 183-2525