Ion Meters

A131 Benchtop Ion Meter

Professional benchtop ion meter contains 5 ion measurement modes, 2 to 5 points calibration. The meter is suitable for measuring the ion concentration and water hardness.

Ion Concentration Mode:
• Professional benchtop ion meter is equipped with a 7 inch TFT display.
• 2 to 5 points calibration, including the 8 concentration points can be selected.
• Electrode management is capable of storing and recalling up to 3 electrode slopes.
• Selectable ion measurement methods (direct reading, known addition, known subtraction,
  sample addition, sample subtraction) and concentration units (ppm, mg/L, mol/L, mmol/L).

Water Hardness Mode:
• 2 to 5 points calibration from low to high concentrations.
• Selectable measurement units (german degree, english degree, french degree, mmol/L
  and mg/L) are used for professional water hardness measurements.

Benchtop Ion Meter

Other Features:
• Automatic temperature compensation ensures accurate readings over the entire range.
• Auto-Read function senses and locks the measurement endpoint.
• Timed Interval Readings sends the measurement data to a PC or printer.
• Limit Alarm automatically alerts when reading exceeds the specified range.
• Calibration due alarm prompts user to calibrate the meter regularly.
• Calibration report shows the date, time, calibration points and slopes.
• Password protection prevents the unauthorized calibration and settings.
• Expanded memory stores or recalls up to 1000 data sets.
• Reset function automatically resumes all settings back to the factory defaults.



   Ion Concentration


0.001 to 30000 (deponding on the range of ISE)


0.001, 0.01, 0.1, 1


±0.5% F.S. (monovalent), ±1% F.S. (divalent)

   Calibration Points

2 to 5 points

   Calibration Solutions

0.001, 0.01, 0.1, 1, 10, 100, 1000, 10000

   Measurement Units

ppm, mg/L, mol/L, mmol/L

   Measurement Methods

Direct reading, known addition, known subtraction,

sample addition, sample subtraction

   Water Hardness

   Range (Concentration)

0.05 to 200mmol/L

   Range (German Degree)

0 to 1120°dH

   Range (English Degree)

0 to 1404°e

   Range (French Degree)

0 to 2000°fH

   Range (Ca2+)

0 to 8000mg/L

   Range (CaCO3)

0 to 19999mg/L

   Range (CaO)

0 to 11220mg/L


0.001, 0.01, 0.1, 1


±1% F.S.

   Calibration Points

2 to 5 points

   Calibration Solutions

0.01, 0.1, 1, 10, 100mmol/L










0 to 105°C/32 to 221°F





   Offset Calibration

1 point

   Calibration Range

Reading ±10°C

   General Specifications

   Temperature Compensation

0 to 100°C/32 to 212°F, manual or automatic

   Stability Criteria

Standard or high-accuracy

   Calibration Due Alarm

1 to 31 days or off

   Interval Readings

10, 30, 60 seconds, 10, 30 minutes or off

   Password Protection

4 digits


Stores up to 1000 data sets


USB communication interface


BNC, 3.5mm jack socket




DC12V, using AC adapter, 220V/50Hz





   Order Code




Ion selective electrode

TP-10K temperature probe

Standard solutions 100, 1000ppm

Ionic strength adjuster

DC12V power adapter

Items Description
Na-US Sodium Electrode Range: 0.1 to 23000ppm
CL-US Chloride Electrode Range: 1.8 to 35500ppm
F-US Fluoride Electrode Range: 0.02ppm to saturation
Ca-US Calcium Electrode Range: 0.02 to 4000ppm
NO3-US Nitrate Electrode Range: 0.4 to 62000ppm
Br-US Bromide Electrode Range: 0.4 to 79900ppm
NH4-US Ammonium Electrode Range: 0.1 to 18000ppm
Cn-US Cyanide Electrode Range: 0.2 to 260ppm
Cd-US Cadmium Electrode Range: 0.01 to 11200ppm
Cu-US Copper Electrode Range: 0.006 to 6400ppm
I-US Iodide Electrode Range: 0.06 to 127000ppm
Pb-US Lead Electrode Range: 0.2 to 20700ppm
Ag-US Silver Electrode Range: 0.01 to 107900ppm
K-US Potassium Electrode Range: 0.04 to 39000ppm
S-US Sulphide Electrode Range: 0.003 to 32100ppm
NH3-US Ammonia Electrode Range: 0.02 to 17000ppm
WH-UK Water Hardness Electrode Range: 0.05 to 200mmol/L
TP-10K Temperature Probe For the temperature measurement
Ion Standard Solutions 480ml/bottle
Ionic Strength Adjuster 480ml/bottle
USB Cable For transferring data to PC
Thermal Printer For the A series meters

   Order Code

Carton Dimensions (L×W×H)