Spec. ind. pH 6.4-8.0, reel

Special indicator paper pH 6.4-8.0 test paper measuring range: pH <(><<)>6.4-6.4-6.6-6.8- 6.8-7.0-7.2-7.4-7.6-7.8-8.0>8.0 reel of 5 m length x 7 mm width