Profitrode (length 31 cm)

Profitrode (length 31 cm)
Order number: 6.0255.120

Combined pH electrode with double-junction construction, installation length 31.0 cm.
This electrode is suitable for pH measurements/titrations of samples:

  • that contaminate the reference system of the electrode (e.g., galvanic baths, samples containing sulfides)
  • for which potassium chloride c(KCl) = 3 mol/L cannot be used as reference electrolyte (e.g., reaction of potassium or chloride with sample)

The electrode is equipped with a flexible ground-joint diaphragm which is insensitive to contamination and which can be exchanged when needed.

When c(KCl) = 3 mol/L is used as bridge electrolyte, storage in storage solution is recommended.
The bridge electrolyte can be easily replaced with a suitable electrolyte (e.g., potassium nitrate c(KNO3) = 1 mol/L (6.2310.010)). Storage in the used bridge electrolyte.

  • Tech specs
  • Documents
  • Applications
  • Included parts
  • Opt. equipment
Diaphragm Ground-joint diaphragm
Electrode plug-in head Metrohm plug-in head G
Electrode slope > 0.97
Electrode zero point (mV) ± 15
Electrolyte flow rate (μl/h) at 10 cm water column 20...100
Indicator electrode shape Cylinder
Indicator electrode type pH glass electrode
Max. installation length (mm) 310
Measuring range 0 ... 14
Measuring unit pH
Membrane glass type U
Membrane resistance 150 ... 500
Min. immersion depth (mm) 30
pH range 0...14
Reference electrolyte type c(KCl) = 3 mol/L
Reference system LL system
Resistance (kOhm) 5
SGJ sleeve Flexible SGJ sleeve
Shaft diameter bottom (mm) 12
Shaft diameter top (mm) 12
Shaft material Glass
Temperature range, long-term (°C) 0 ... 80
Temperature range, short-term (°C) 0 ... 100