EtOH-Trode

EtOH-Trode
Beställningsnummer: 6.0269.100

Combined pH electrode with double junction construction for pH measurements in non-aqueous media (e.g., for pHe in ethanol).

The electrode is equipped with a fixed ground-joint diaphragm which is insensitive to contaminaiton, and the bridge electrolyte can be freely chosen (aqueous or non-aqueous).
When c(KCl) = 3 mol/L is used as bridge electrolyte, storage in storage solution is recommended.
When another bridge electrolyte is used, storage in the used bridge electrolyte.

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Diaphragm Fixed 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) 5 ... 30
Indicator electrode shape Sphere
Max. installation length (mm) 125
Measuring range 0 ... 13
Measuring unit pH
Membrane glass type A
Membrane resistance 80 ... 200
Min. immersion depth (mm) 20
pH range 0...13
Reference electrolyte type c(KCl) = 3 mol/L
Reference system LL system
Resistance (kOhm) 10
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 ... 80

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  • Sleeve with SGJ 14/12 mm
    6.1236.050
    Sleeve with SGJ 14/12 mm
    Sleeve with SGJ 14/12 mm, polyethylene.

    1 piece(s)

  • 
            
    Storage vessel
            
     
    6.2008.040
    Storage vessel  


    Together with 6.2008.050 storage vessel holder provides a support for the electrode on 6.3032.XXX dosing units.


    1 piece(s)

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  • Electrode cable / 1 m / F
    6.2104.020
    Electrode cable / 1 m / F
    For connecting electrodes with Metrohm plug-in head G to Metrohm instruments (socket F).
  • Electrode Cable 2 m / F
    6.2104.030
    Electrode Cable 2 m / F
    For connecting electrodes with Metrohm plug-in head G to Metrohm instruments (socket F).
  • Electrolyte  3 mol/L KCl (250 mL)
    6.2308.020
    Electrolyte 3 mol/L KCl (250 mL)
    Electrolyte solution c(KCl) = 3 mol/L, (for Ag/AgCl reference systems)
  • Electrolyte KNO3-1mol/L 250 mL
    6.2310.010
    Electrolyte KNO3-1mol/L 250 mL
    Electrolyte solution KNO3 1 M (reference electrolyte for combined silver electrodes)
  • TEABr 0.4 mol/L in ethylene glycol (250 mL)
    6.2320.000
    TEABr 0.4 mol/L in ethylene glycol (250 mL)
    Electrolyte solution TEABr (tetraethylammonium bromide in ethylene glycol), c(TEABr) = 0.4 mol/L
  • Storage solution
    6.2323.000
    Storage solution
    Storage solution for all combined pH glass electrodes with reference electrolyte c(KCl) = 3 mol/L
  • pHit kit
    6.2325.000
    pHit kit

    Maintenance kit for pH electrodes

    The kit contains:

    • 50 mL cleaning solution
    • 50 mL 3M KCl solution
    • 50 mL storage solution
    • 2 Storage vessels
    • Instructions for use
  • Cleaning solution 3 x 50 mL
    6.2325.100
    Cleaning solution 3 x 50 mL

    Reliable measuring results over long periods of time can be guaranteed only if the pH glass membrane and the diaphragm receive preventive and regular care. Cleaning by etching with toxic chemicals or applying mechanical treatment to the diaphragm is not only complicated and expensive, it also accelerates the ageing of the pH glass electrode.
    The cleaning solution was developed for easy and gentle cleaning of pH glass electrodes. Regular use can considerably prolong their service life.

    This cleaning solution is also part of the pHit kit.