Online pH Controller LOPC-A10

Online pH Controller LOPC-A10 features 1 to 3 points pH calibration system, and 4 to 20 mA output signal transmitter. The large and clear back light LCD displays Calibration and setup values, temperature values, ATC (automatic temperature compensation) values, high and low limit of measurement. The automatic electrode slope display helps user decide when to replace the sensor.

pH measurement range 01.00 to 15.00 pH
pH calibration points 1 to 3 points
pH Buffer Solutions USA (pH 4.01, 7.00, 10.01) or NIST (pH 4.01, 6.86, 9.18)
pH accuracy ± 0.01 pH
pH resolution 0.01 pH
mV measurement range -1000 to 1000 mV
mV accuracy ± 1 mV
mV resolution 1 mV
Temperature range 0 to 100°C , 32 to 212°F
Temperature calibration points 1 point
Temperature calibration range ± 10°C
Temperature accuracy ± 1°C
Temperature resolution 0.1°C
Signal output 4 to 20 mA
Load Max 500
Low and high alarm limits 1.00 to 10.00 pH, selectable
Connection Interface RS485
Connection Terminals Detectable screw terminals
Temperature compensation Automatic, 0 to 100°C , 32 to 212°F
Environmental conditions Ambient temperature to ≤ 60°C, RH ≤ 80%
Display LCD
Power DC 24 V
Dimension (L*W*H) 96 × 96 × 75 mm
Weight 350 g
  • Equipped with industrial pH electrode
  • 1 to 3 pH calibration points with ‘Automatic buffer recognition’
  • ATC mode for accurate readings over entire range
  • Low high alarm limits set automatically activate an external device
  • Selectable temperature units °C or °F for diff. applications
  • System menu allows setting of up to 9 parameters
  • Reset features to resumes all setting back to default
  • Manual temperature calibration improves accuracy

Used to measure pH in waste water treatment and quality inspection plants, filtration systems, RO treatment water plants, Agriculture, Aquaculture, and research industry.

Determination range
0 to 35 mg/L, 0 to 70 mg/ L, 0 to 350 mg/L, 0 to 700 mg/L (without dilution)
0 to 4000 mg/ L (need to dilute) (subsection measurement)
Measurement error Less or less than 10 %
Sample container/ bottle quantity 1 to 6
Sample container/ bottle Capacity 1000 ml

Benchtop Water Hardness Meter

Labtron benchtop meters are easy to use. The LCD display, manual or automatic mode of calibration, universal connector and other features are included in this range to produce accurate, reliable results. It consist of benchtop meter for measuring pH, conductivity, dissolved oxygen content, Ion concentration, water hardness level. These meters are suitable for simple to complex applications in water quality testing, research and analysis etc.

Water hardness range 0.05 mmol / L -0.2 mol / L <br/> (CaCO<sub>3</sub>) 0 - 19999 mg / L, (CaO) 0 - 11220 mg / L, (boiler) 0 - 400 mmol / L, (Ca) 0 - 8020 mg / L<br/> (German degree) 0 - 1122 °dH, (English degree) 0 - 1404 °e, (French degree) 0 - 2000 °f
Accuracy ± 1 % F.S.
Calibration points 2 to 5 points
Calibration solution 0.001, 0.01, 0.1 mmol/L, 0.001, 0.01, 0.1 mol/L
Measuring range (NTU) 0 to 200
Minimum readout value (NTU) 0.1
Calibration point Nil
Sample volume 5 to 10 ml
Light source LED/860 nm (Wavelength)
Readings display LCD
Unit switches NTU, FTU, EBC, ASBC
Measurement range 0.00-20.0; 20.01-200; 200.01-1000 NTU
Measuring range (NTU) 0 to 100, 0 to 200
Minimum readout value (NTU) 0.01, 0.1
Calibration point 4
Sample volume 5 to 10 ml
pH Mode
pH range -2.00 to 20.00 pH
pH Accuracy ± 0.002 pH
pH Resolution 0.1/0.01/0.001 pH, selectable
pH Calibration Points 1 to 5 Points
pH Buffer Solutions USA (pH 4.0/7.00/10.01) or NIST (pH 4.01/6.86/9.18) or DIN buffers
mV Mode
mV Range -1999.9 to 1999.9 mV
mV Accuracy ± 0.2 mV
mV Resolution 0.1/1 mV, selectable
mV Calibration Points 1 Point
Conductivity Mode
Conductivity Range 0.01 to 20.00, 200.0, 2000 µS/cm, 20.00, 200.0 mS/cm
Conductivity Accuracy ± 0.5% F.S.
Conductivity Resolution 0.01/0.1/1
Conductivity Calibration Points 1 to 5 Points
Conductivity Solutions 10, 84, 1413 µS/cm, 12.88, 111.8 mS/ cm
Conductivity Temperature coefficient 0.0 to 10.0 %/°C
Compensation mode Linear or Pure Water
Cell Constant K=0.1, 1, 10 or Custom
Reference temperature 20 or 25°C
TDS Mode
TDS Range 0 to 10.00, 100.0, 1000 ppm, 10.00, 100 ppt (Max. 200 ppt)
TDS Accuracy ± 1 % F.S.
TDS Factor 0.1  to 1.0 (default 0.5)
pH Mode
pH range -2.00 to 20.00 pH
pH Accuracy ± 0.002 pH
pH Resolution 0.1/0.01/0.001 pH, selectable
pH Calibration Points 1 to 5 Points
pH Buffer Solutions USA (pH 4.0/7.00/10.01) or NIST (pH 4.01/6.86/9.18) or DIN buffers
mV Mode
mV Range -1999.9 to 1999.9 mV
mV Accuracy ± 0.2 mV
mV Resolution 0.1/1 mV, selectable
mV Calibration Points 1 Point
Conductivity Mode
Conductivity Range 0.01 to 20.00, 200.0, 2000 µS/cm, 20.00, 200.0 mS/cm
Conductivity Accuracy ± 0.5% F.S.
Conductivity Resolution 0.01/0.1/1
Conductivity Calibration Points 1 to 5 Points
Conductivity Solutions 10, 84, 1413 µS/cm, 12.88, 111.8 mS/ cm
Conductivity Temperature coefficient 0.0 to 10.0 %/°C
Compensation mode Linear or Pure Water
Cell Constant K=0.1, 1, 10 or Custom
Reference temperature 20 or 25°C
TDS Mode
TDS Range 0 to 10.00, 100.0, 1000 ppm, 10.00, 100 ppt (Max. 200 ppt)
TDS Accuracy ± 1 % F.S.
TDS Factor 0.1  to 1.0 (default 0.5)
pH Mode
pH range -2.00 to 20.00 pH
pH Accuracy ± 0.002 pH
pH Resolution 0.1/0.01/0.001 pH, selectable
pH Calibration Points 1 to 5 Points
pH Buffer Solutions USA (pH 4.0/7.00/10.01) or NIST (pH 4.01/6.86/9.18) or DIN buffers
mV Mode
mV Range -1999.9 to 1999.9 mV
mV Accuracy ± 0.2 mV
mV Resolution 0.1/1 mV, selectable
mV Calibration Points 1 Point
Conductivity Mode
Conductivity Range 0.01 to 20.00, 200.0, 2000 µS/cm, 20.00, 200.0 mS/cm
Conductivity Accuracy ± 0.5% F.S.
Conductivity Resolution 0.01/0.1/1
Conductivity Calibration Points 1 to 5 Points
Conductivity Solutions 10, 84, 1413 µS/cm, 12.88, 111.8 mS/ cm
Conductivity Temperature coefficient 0.0 to 10.0 %/°C
Compensation mode Linear or Pure Water
Cell Constant K=0.1, 1, 10 or Custom
Reference temperature 20 or 25°C
Dissolved Oxygen Mode
Dissolved Oxygen Range 0.00 to 20.00 mg/ L
Dissolved Oxygen Accuracy ± 0.2 mg/ L
Dissolved Oxygen Resolution 0.1/ 0.01 mg/ L, selectable
Dissolved Oxygen Calibration Points 1 or 2 Points
% Saturation Range 0.0 to 200.0 % with ± 2 % accuracy
Pressure correction 60 to 112.5 kPa, 450 to 850 mmHg
Salinity correction 0 to 50 g/ L

Benchtop Conductivity Meter

Labtron benchtop meters are easy to use. The LCD display, manual or automatic mode of calibration, universal connector and other features are included in this range to produce accurate, reliable results. It consist of benchtop meter for measuring pH, conductivity, dissolved oxygen content, Ion concentration, water hardness level. These meters are suitable for simple to complex applications in water quality testing, research and analysis etc.

Conductivity measurement range 0.000 μS/cm to 3000mS/cm
Resistivity measurement range 5.00 Ω·cm to 100.0 MΩ·cm
TDS measurement range 0.000 mg/L to 1000g/L
Salinity measurement range 0.00 to 8.00 %
Conductivity measurement range 0 - 20.0, 200.0, 2000 µS / cm, 200.0 mS / cm
Conductivity accuracy ± 1 % F.S.
Conductivity resolution 0.01, 0.1, 1
Conductivity calibration solutions 10 µS / cm , 84 µS / cm, 1413 µS / cm, 12.88 mS / cm, 111.8 mS / cm
Conductivity Mode
Conductivity measurement range 0.01-20.0, 200.0, 2000 µS/cm, 20.00, 200.0 mS/cm
Conductivity accuracy ±1% F.S.
Conductivity resolution 0.001, 0.01, 0.1, 1
Conductivity calibration points 1 to 3 points
Conductivity calibration solutions 10 µS/cm , 84 µS/cm, 1413 µS/cm, 12.88 mS/cm, 111.8 mS/cm
TDS Mode
TDS measurement Range 0 to 10.00, 100.0, 1000 ppm, 10.00, 100 ppt (Max. 200 ppt)
TDS Accuracy ± 1 % F.S.
TDS Factor 0.01 to 1.00 (default 0.5)
TDS Calibration points 3 points
Temperature Mode
Temperature range 0 to 105°C, 32 to 221°F
Temperature accuracy ±1°C
Temperature resolution 0.1°C, 0.1°F
Temperature calibration points 1 point
Temperature Compensation Range and Mode Manual or Automatic, 0 to 100°C , 32 to 212°F
Temperature coefficient 0.0 to 10.0 % per °C
Cell constant K=0.1, 1, 10