Whatman indicator papers, pH 6.0-8.1, pk/200 (2629-990) Back Catalog number: 9950141 Availability: In the manufacturer's stock Price on request - + Recommended 92135 pH-Fix Indicator Strips, 3.1-8.3, pk/100 Price on request Z2811-1ROLL Chemsolute pH indicator paper pH 1-11, 1 roll 5m x 7mm Price on request 92190 pH-Fix Indicator Strips, 1.7-3.8, pk/100 Price on request