Hach Intellical PHC805, User Manual

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Section 1 Product overview
The Intellical PHC805 pH probes are digital, combination electrodes that measure the pH of water
samples. The probes have good performance in laboratory applications for general water samples.
The probes are refillable and have a built-in temperature sensor and a ceramic porous pin for the
reference junction. A 50-mL bottle of reference electrolyte filling solution is supplied with the probe.
Refer to
Figure 1 .
Note: Do not use the probe to measure the pH of organic solvents, wastewater, samples with many solids or
ultrapure samples of low ionic strength. For best accuracy do not use the probe to measure the pH of very alkaline
samples.
Figure 1 Probe overview
1 Probe soaker bottle with storage solution 5 Probe soaker bottle holder
2 Filling-hole plug 6 Electrode filling and storage solution
3 Protective tape and filling hole 7 Reference junction
4 Cable 8 Glass bulb and temperature sensor
Section 2 Specifications
Specifications are subject to change without notice.
Specifications Details
Probe type Digital combination glass pH probe with refillable electrolyte and built-
in temperature sensor
pH range 0 to 14 pH
pH accuracy ±0.02 pH
Reference type Ag/AgCl
Reference junction Porous pin 1 mm
Slope –59 mV/pH (85 to 115% at 25 °C (77 °F) per Nernstian theoretical
value)
English 3