To make the calibration, the emf posts of the potentiometer are connected to the electrode terminals of the pH meter (negative post to glass electrode terminal). To duplicate working conditions, the wire to the glass electrode terminal should include a 50- to 200-megohm resistor and be shielded. ... In addition, instruments specifically termed titrimeters are available (Beckman, Fisher, 15-7] 469 MANUALanbsp;...
|Author||:||Howard A. Strobel|