Whatman 2614991 Indicator, 4.5 pH (Pack of 100)

Type CF individual plastic support strips carry four different segments of dye-impregnated indicator papers. The resulting comination of color differences gives an extremely clear and accurate visual pH value. All the dyes are chemically bonded to the paper and cannot be leached into solution. Problems associated with contamination of the sample and resultant anomalous readings are avoided.