Section 1 Product Overview; Section 2 Specifications - Hach PHC745 User Manual

Section 1 Product overview

The Intellical PHC745 pH probes are digital, combination electrodes that measure the pH of water
samples. The glass sleeve junction keeps the reference junction clean for measurements in
wastewater influent, emulsions and viscous liquids. The probes use the Red Rod technology and a
saturated KCl electrolyte for high performance. The probes are refillable and have a built-in
temperature sensor. A 59-mL bottle of reference electrolyte filling solution (saturated KCl solution) is
supplied with the probe. Refer to
Note: Do not use the probe to measure the pH of organic solvents or very alkaline samples.
Figure 1 Probe overview
1 Probe soaker bottle with storage solution
2 Filling-hole plug
3 Protective tape and filling hole
4 Cable

Section 2 Specifications

Specifications are subject to change without notice.
Specifications
Probe type
pH range
pH accuracy
Reference type
Reference junction
Slope
Isopotential point
Figure 1.
Details
Digital combination glass pH probe with refillable electrolyte and built-
in temperature sensor
0 to 14 pH
±0.01 pH
Red Rod (Ag/AgCl in protective tubes)
Glass sleeve
–59 mV/pH (85 to 115% at 25 °C (77 °F) per Nernstian theoretical
value)
6.00 pH
5 Electrode filling and storage solution
6 Glass sleeve junction
7 Glass bulb and temperature sensor
English 3