This assorted box of EMD Chemicals® ColorpHast® pH Test Strips (Non-Bleeding) by EMD Chemicals® contains a 13 pack variety of pH strips. Special indicator dyes do not allow bleeding, and give quick and accurate results in 3 to 5 seconds. The pH dye is covalently bound to the reagent paper, and can be used in weakly buffered/weakly colored solutions. Strips will not contaminate samples and can be used in the laboratory or on remote sites. Includes two packs of 0.0 to 6.0 pH, two packs of 5.0 to 10.0 pH, two packs of 7.5 to 14.0 pH, two packs of 0.0 to 14.0 pH, one pack of 0.0 to 2.5 pH, one pack of 2.5 to 4.5 pH, one pack of 4.0 to 7.0 pH, one pack of 6.5 to 10.0 pH, and one pack of 11.0 to 13.0 pH strips. Packaged in a chipboard box with 100 strips per pack in an assortment of 13 packs per case. Method: Color Scale. Number Of Strips Per Pack: 100. Contents: Variety Of 13 pH Packs. EMD Millipore #: 1.09504.0007.