Yokogawa PH72 Personal pH/ORP Meter - Manual (Page 53)

IM 12B03D02-01E 6-4
6. Maintenance
6.5 Replenishing the Electrode with Filling Solution (KCl
solution)
Replenishment is required only when a KCl refillable type combination sensor is used.
An electrode filling solution leaks from the liquid junction little by little during
measurement. When the level of filling solution drops to the level shown in Figure 6.3,
replenish with a 3.3 mol/l KCl solution supplied.
CAUTION
A syringe tip is sharp. Handle with care.
F0603.EPS
How to fill using syringe
Fill hole for KCl solution
Syringe (supplied)
Filling solution level
Protective cover
Replenish when filling solution
level drops to the level shown above.
2
0
mm
Figure 6.3 Replenishment of Filling Solution