Universal pH indicator paper Tritest, 2 x 5 m rolls, width 10 mm, pH 1 - 11Universal pH indicator paper Tritest, 2 x 5 m rolls, width 10 mm, pH 1 11 With three indicator zones (one main and two sub indicator zones) for better estimation of intermediate values. By roll, 10 mm length and 5 m width. Delivery incl. two dispensers with indicator paper and a colour chart. Technical Information pH measuring range 1 to 11 Gradation 1 2 3 4 5 6 7 8 9 10 11 PDF Technical Documentation (PDF)