Hach-Lange PHC729 - Manual

User Manual
DOC022.52.80433
PHC729
Safety information
W A R N I N G
Chemical exposure hazard. Obey laboratory safety procedures and wear all of the
personal protective equipment appropriate to the chemicals that are handled. Refer to the
current safety data sheets (MSDS/SDS) for safety protocols.
C A U T I O N
Personal injury hazard. Glass components can break. Handle with care to prevent cuts.
Precautionary labels
Read all labels and tags attached to the instrument. Personal injury or damage to the
instrument could occur if not observed. A symbol on the instrument is referenced in the
manual with a precautionary statement.
Electrical equipment marked with this symbol may not be disposed of in European domestic or public disposal
systems. Return old or end-of-life equipment to the manufacturer for disposal at no charge to the user.
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
Body material Glass
pH range pH 0 to 12
pH resolution User-selectable stabilization time and resolution—Fast: 0.1, Fast: 0.01, Medium: 0.01, Slow:
0.01 or Slow: 0.001
pH accuracy ±0.01 pH
Sodium (alkalinity) error <0.3 pH at pH 13 in 0.1 M NaOH
Slope –59 mV/pH (85 to 115% at 25 °C (77 °F) per Nernstian theoretical value)
Isopotential point pH 6.00
Temperature compensation 30 kΩ NTC thermistor
Temperature accuracy ±0.3 °C (±0.54 ° F)
Operating temperature –10 to 100 °C (14 to 212 °F)
Storage temperature 5 to 40 °C (41 to 104 °F)
Junction type Annular porous ring
Reference type Red Rod 1
Electrolyte Refillable, saturated KCl
1