Universal Indicator Paper
Johnson pH papers are manufactured using high quality papers which are impregnated with mixed indicator solutions, dried and then cut to size. In general our pH papers are supplied in rolls or books which are both convenient but also protect against external effects such as moisture, light and ambient gases, resulting in a prolonged shelf life.
Available as 10 books of 20 strips, 1 reel (5m x 7mm), 3 reel refill pack*,and 100 strips per pack.