Spec. ind. pH 7.2-9.7, reel, refill

Special indicator paper pH 7.2-9.7 test paper - refill pack of 3 reels - measuring range: pH <(><<)>7.2-7.2-7.5-7.8-8.1- 8.4-8.7-9.0-9.3-9.7>9.7 reel of 5 m length x 7 mm width