Code: V210414M
BDH® '4.5' Indicator pH 3,5-6,0 pH-indicator, for titration of first hydrogen of phosphoric acid. Cat. No. Pk. Pack type. 210414M. 500 ml. Glass bottle.
A mixed indicator for the titration of the first hydrogen of phosphoric acid, range pH 3,5 to 6,0
pH 3,5 orange-red
pH 4,4 orange-grey
pH 4,5 pure grey
pH 4,6 bluish-grey
pH 6,0 deep blue