Meinsberg pH Combination Electrodes

pH combination electrode series: EGA 133 I, EGA 140, EGA 143, EGA 150 I, EGA 153 I, EGA 161 L/PG, EGA 173 I, EGA 233 I, EGC 151 I/S, EGP 150 I, EGV 150 I

  • Features
Type EGA 133 I EGA 233 I
Features
  • pH combination electrode for swimming pool and aquarium water
  • robust plastic shaft with integrated pH membrane protection
  • gel electrolyte
  • pH combination electrode for measurements in so called "electrode toxins" (sulphides)
  • double-junction reference system
  • gel electrolyte
Shaft plastic, Ø 12 mm glass, Ø 12 mm
Immersion length 120 mm 120 mm
Temperature sensor - -
Membrane shape cylinder cylinder
Reference system Ag/AgCl Ag/AgCl
Electrolyte (KCl) gel (3 M) gel (3 M)
Diaphragm 2 x ceramic 4 x ceramic
Isopotential point 7.0 ± 0.3 7.0 ± 0.3
pH range 0 ... 14 0 ... 14
Temperature range -5 ... 80 °C -5 ... 80 °C
Pressure < 6 bar < 6 bar
Minimum conductivity 
of the medium
100 µS/cm 100 µS/cm
Application raw water, waste water, surface water, swimming pools waste water, electroplating, mediums in so called "electrode toxins"
Electrical connection S7 coaxial plug head with thread PG 13.5 S7 coaxial plug head with thread PG 13.5
Order code EGA 133 I EGA 233 I

Type EGA 140 EGA 143
Features:
  • pH combination electrode for beverage industry
  • integrated temperature sensor
  • gel electrolyte
  • pH combination electrode for heavily polluted waste water
  • ring-shaped sleeve junction
  • integrated temperature sensor
  • gel electrolyte
Shaft glass, Ø 12 mm glass, Ø 12 mm
Immersion length 120 mm 120 mm
Temperature sensor Pt 1000 or Pt 100 or NTC 30 kΩ Pt 1000 or Pt 100 or NTC 30 kΩ
Membrane shape cylinder cylinder
Reference system Ag/AgCl Ag/AgCl
Electrolyte (KCl) gel (3 M) gel (3 M)
Diaphragm 2 x ceramic sleeve junction
Isopotential point 7.0 ± 0.3 7.0 ± 0.3
pH range 0 ... 14 0 ... 14
Temperature range -5 ... 80 °C -5 ... 80 °C
Pressure < 6 bar < 6 bar
Minimum conductivity 
of the medium
100 µS/cm 50 µS/cm
Application surface water, soap water, beverages low ionic mediums, heavily polluted waste water, electroplating
Electrical connection SMEK plug head with thread PG 13.5 or 
Variopin plug head with thread PG 13.5
SMEK plug head with thread PG 13.5 or 
Variopin plug head with thread PG 13.5
Order code EGA 140 SMEK, EGA 140 VP
EGC 140 SMEK, EGC 140 VP
EGA 143 SMEK, EGA 143 VP
EGC 143 SMEK, EGC 143 VP

Type EGA 150 I EGC 151 I/S
Features:
  • pH combination electrode for swimming pool and aquarium water
  • gel electrolyte
  • pH combination electrode for pressureless application in process chemistry (sugar industry)
  • thermally stable up to 100 °C
  • long-term stable (electrolyte with saturated KCl solution and KCl reserve)
Shaft glass, Ø 12 mm glass, Ø 12 mm
Immersion length 120 mm 120 mm
Temperature sensor - -
Membrane shape cylinder cylinder
Reference system Ag/AgCl Ag/AgCl
Electrolyte (KCl) gel (3 M) fluid (saturated) with KCl reserve
Diaphragm 1 x ceramic 1 x ceramic
Isopotential point 7.0 ± 0.3 7.0 ± 0.3
pH range 0 ... 14 0 ... 14
Temperature range -5 ... 80 °C -5 ... 100 °C
Pressure < 6 bar pressureless
Minimum conductivity 
of the medium
100 µS/cm 100 µS/cm
Application raw water, waste water, surface water, swimming pools hot (100 °C) mediums with extreme pH values
Electrical connection S7 coaxial plug head with thread PG 13.5 S7 coaxial plug head with thread PG 13.5
Order code EGA 150 I, EGC 150 I EGC 151 I/S, EGA 151 I/S

Type EGA 153 I EGP 150 I
Features:
  • pH combination electrode for waste water and electroplating
  • 3 ceramic diaphragms
  • gel electrolyte with KCl reserve pipe
  • pH combination electrode for measurements in process chemistry
  • thermally stable up to 130 °C
  • gel electrolyte
Shaft glass, Ø 12 mm glass, Ø 12 mm
Immersion length 120 mm 120 mm
Temperature sensor - -
Membrane shape cylinder cylinder
Reference system Ag/AgCl Ag/AgCl
Electrolyte (KCl) gel (3 M) gel (3 M)
Diaphragm 3 x ceramic 3 x ceramic
Isopotential point 7.0 ± 0.3 7.0 ± 0.3
pH range 0 ... 14 0 ... 14
Temperature range -5 ... 80 °C -5 ... 130 °C
Pressure < 6 bar < 15 bar
Minimum conductivity 
of the medium
100 µS/cm 100 µS/cm
Application heavily waste water, electroplating process chemistry, high temperatures
Electrical connection S7 coaxial plug head with thread PG 13.5 S7 coaxial plug head with thread PG 13.5
Order code EGA 153 I, EGC 153 I EGP 150 I

Type EGV 150 I EGA 161 L/PG
Features:
  • pH combination electrode for sterilisations in biotechnology
  • thermally stable up to 130 °C
  • gel electrolyte
  • pH combination electrode for low ionic mediums
  • side tube realises connecting to an electrolyte reservoir → constant outflow of electrolyte
  • flexible sleeve junction
Shaft glass, Ø 12 mm glass, Ø 12 mm
Immersion length 120 mm 120 mm
Temperature sensor - -
Membrane shape cylinder cylinder
Reference system Ag/AgCl Ag/AgCl
Electrolyte (KCl) Gel (3 M) fluid (3 M)
Diaphragm 2 x holes flexible sleeve junction
Isopotential point 7.0 ± 0.3 7.0 ± 0.3
pH range 0 ... 14 0 ... 14
Temperature range -5 ... 130 °C -5 ... 80 °C
Pressure < 6 bar < 1 bar with pressure load at side tube connector
Minimum conductivity 
of the medium
50 µS/cm 20 µS/cm
Application low ionic mediums, biotechnology, fermenters low ionic mediums, drinking water with low conductivity
Electrical connection S7 coaxial plug head with thread PG 13.5 S7 coaxial lab plug head with thread 
PG 13.5 (shaft)
Order code EGV 150 I EGA 161 L/PG

Type EGA 173 I
Features:
  • pH combination electrode for heavily polluted waste water and electroplating
  • ring-shaped sleeve junction
  • gel electrolyte with KCl reserve pipe
Shaft glass, Ø 12 mm
Immersion length 120 mm
Temperature sensor -
Membrane shape cylinder
Reference system Ag/AgCl
Electrolyte (KCl) gel (3 M)
Diaphragm sleeve junction
Isopotential point 7.0 ± 0.3
pH range 0 ... 14
Temperature range -5 ... 80 °C
Pressure < 6 bar
Minimum conductivity 
of the medium
50 µS/cm
Application drinking water, water soluble lacquers, low ionic mediums, electroplating, waste water
Electrical connection S7 coaxial plug head with thread PG 13.5
Order code EGA 173 I, EGC 173 I