PHENOLPHTHALEIN INDICATOR PAPER (5M) (Sufficient for approx. 150 Tests)
EASY TO USE
Test for the Alkalinity (Base) of solutions and products such as concrete.
Clear [Acidic pH 1 – 7 (Water)] to . . . slightly Pink (Alkaline pH 7 – 14)
1. Simply tear off a small strip of Phenolphthalein paper from roll. (5m)
2. Dip strip into solution, liquid or suspension for 3 sec.
3. The solution, etc is determined to be Alkaline by the presence of a faint, permanent, pink colouration of the Phenolphthalein paper.
4. Colour Change: pH 1 – 7 ( Acidic – Clear colour) . . . . . pH greater than 7.0 – 14 (Alkaline – faint Pink colour)