Duotest Test Papers


DUOTEST

double zone pH-papers

These indicator papers show two different colors for each pH-value at intervals of 0.3 1 pH-unit. This allows more accurate reading and good estimation of intermediate values.

DUOTEST at a glance
range pH gradation REF Price
pH 1 - 12 1 2 3 4 5 6 7 8 9 10 11 12 90301 $13.90
pH 1.0 - 4.3 1 1.3 1.6 1.9 2.2 2.5 2.8 3.1 3.4 3.7 4.0 4.3 90302 $13.90
pH 3.5 - 6.8 3.5 3.8 4.1 4.4 4.7 5.0 5.3 5.6 5.9 6.2 6.5 6.8 90303 $13.90
pH 5.0 - 8.0 5.0 5.3 5.6 5.9 6.2 6.5 6.8 7.1 7.4 7.7 8.0 90304 $13.90
pH 7.0 - 10.0 7.0 7.3 7.6 7.9 8.2 8.5 8.8 9.1 9.4 9.7 10.0 90305 $13.90
pH 9.5 - 14.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.0 13.5 14.0 90306 $13.90