Users and applications
The SD Series 2025 is chosen by those who want to measure several values with one instrument or use a limit alarm. The model is determined by the value to be measured: SD10 for pH, SD20 for ORP, SD30 for conductivity and salt, and SD40 Multi for all of them. The display shows measurement in blue, calibration in green and alarm in red.
Compatibility and connections
- Measurement
- SD10 pH, SD20 ORP, SD30 conductivity/TDS/salt, SD40 all
- Calibration
- SD20 single point; others 1-3 points
- Limit alarm
- On SD10 and SD20
- Power supply
- 4 x 1.5 V AAA, over 2000 hours
- Operating conditions
- 0-60 °C, 0-80% humidity, non-condensing
- Measurement Type
- pH, temperature / ORP, temperature / Conductivity, TDS, salt, temperature / pH, conductivity, TDS, salt, temperature
- Measuring range
- pH 0.00 - 14.00; pH (mV) -1000 - +1000 mV / ORP -1000 - +1000 mV / Conductivity 0.01 - 20.00 mS/cm; TDS 0.01 - 20.00 ppt; salt 0.01 - 10 g/l / pH 0.00 - 14.00; conductivity 0.01 - 20.00 mS/cm; TDS 0.01 - 20.00 ppt; salt 0.001 - 10 g/l
- Sensitivity (resolution)
- pH 0.01; pH (mV) 1 / 1 mV / Auto range: conductivity 0.1 µS/cm, 1 µS/cm, 0.01 mS/cm; TDS 0.1 ppm, 1 ppm, 0.01 ppt; salt 0.01 ppt / pH 0.01; auto range: conductivity 0.1 µS/cm, 1 µS/cm, 0.01 mS/cm; TDS 0.1 ppm, 1 ppm, 0.01 ppt; salt 0.01 ppt
- Measurement accuracy
- pH ± 0.01 (±1 digit); pH (mV) ± 0.2% FS / ± 0.2% FS / pH ± 0.01 (±1 digit); pH (mV) ± 0.2% FS; conductivity/TDS/salt ± 1% FS
- Calibration points
- 1 - 3 / 1
- Calibration
- USA: 1.68/4.00/7.00/10.01/12.45 pH; NIST: 1.68/4.01/6.86/9.81/12.45 pH / +470 mV (25 °C), Pt Ag/AgCl (3 M KCl) / 84 µS/cm / 1413 µS/cm / 12.88 mS/cm / pH USA: 1.68/4.00/7.00/10.01/12.45; NIST: 1.68/4.01/6.86/9.81/12.45; Con: 84 µS/cm / 1413 µS/cm / 12.88 mS/cm
- Limit alarm
- Yes / No
- Auto-Hold / stability indicator
- Yes
- Temperature measuring range
- 0 - 50 °C
- Temperature accuracy
- 0.1 °C
- Display
- 3-colour backlit LCD (blue: measurement, green: calibration, red: alarm)
- Protection Class
- IP67
- Power Source
- 4 x 1.5 V AAA batteries
- Battery life
- > 2000 h
- Auto power-off
- 8 min
- Operating conditions
- 0 - 60 °C, 0 - 80% relative humidity (non-condensing)
- Dimensions
- 180 x 40 x 40 mm
- Weight
- 151 g
- Certification
- CE
- Recommended
SD10 pH
Code CH-KIM-0009-01
- Measurement Type
- pH, temperature
€504 + VAT
SD20 ORP
Code CH-KIM-0009-02
- Measurement Type
- ORP, temperature
€551.25 + VAT
SD30 EC
Code CH-KIM-0009-03
- Measurement Type
- Conductivity, TDS, salt, temperature
€504 + VAT
SD40 Multi
Code CH-KIM-0009-04
- Measurement Type
- pH, conductivity, TDS, salt, temperature
€598.50 + VAT
Prices are indicative; contact us for a current quote.




