Roll length 5 m, 10 mm width. With two colour zones. Duotest indicator papers combine two different indicator zones on a single strip. The zones are separated by a hydrophobic barrier, which effectively prevents mixing of the reaction colors, simplifying and precisely assigning the pH value.

Test papers pH
pH papers
Paper indicator, special
Indicator paper special
Test papers pH
pH papers
Paper indicator, special
Indicator paper special
Test papers pH
pH papers
Paper indicator, special
Indicator paper special
Test papers pH
pH papers
Paper indicator, special
Indicator paper special
Test papers pH
pH papers
Paper indicator, special
Indicator paper special
Test papers pH
pH papers
Paper indicator, special
Indicator paper special