Specifications

MW300, MW301, MW401 and MW402 are compact
Conductivity and TDS Portable Meters with Faster Micro
Processor. These handy and ergonomically designed
portable meters are ideal for anyone working on a low
budget and still requires fast and reliable measurements.
These portable meters are suitable for a wide range of
applications, such as Educational, Agriculture and
Horticulture, as well as water and environmental analysis.
These portable meters with Automatic Temperature
Compensation have a smaller, ergonomic and lighter case
design. Other features include 100% larger and easier to
read LCD Display and long battery life.
Each meter is supplied complete with Conductivity/TDS
probe with 1 meter cable and calibration solution.
Choose your portable EC & TDS meter according to the
proper EC/TDS ranges for your application:
• MW301: 0 to 1990 µS/cm with a 10 µS/cm resolution;
• MW302: 0.0 to 10.0 mS/cm with a 0.1 mS/cm resolution;
• MW401: 0 to 1990 mg/L (ppm) with a 10 mg/L resolution;
• MW402: 0.0 to 10.0 g/L (ppt) with a 0.1 g/L resolution.
Ordering Information
MW301 is supplied complete with SE510 EC probe,
20 mL 1413 µS/cm sachet of calibration solution, screw-
driver for calibration, 9V battery and instructions.
MW302 is supplied complete with SE520 EC probe,
20 mL 1413 µS/cm sachet of calibration solution, screw-
driver for calibration, 9V battery and instructions.
MW401 is supplied complete with SE510 EC probe,
20 mL 1382 ppm sachet of calibration solution, screwdriv-
er for calibration, 9V battery and instructions.
MW402 is supplied complete with SE520 EC probe,
20 mL 6.44 ppt sachet of calibration solution, screwdriver
for calibration, 9V battery and instructions.
Accessories
SE510 EC/TDS probe with DIN connector
and 1 m cable for MW301, MW401
SE520 EC/TDS probe with DIN connector
and 1 m cable for MW302, MW402
M10031B 1413 µS/cm calibration
solution, 20 mL (25 pcs)
M10032B 1382 ppm (mg/L) calibration
solution, 20 mL (25 pcs)
M10038B 6.44 ppt (g/l) calibration solution,
20 mL (25 pcs)
MA9060 12880 µS/cm calibration solution,
230 mL bottle
MA9061 1413 µS/cm calibration solution,
230 mL bottle
MA9062 1382 ppm TDS solution,
230 mL bottle
Specifications
MW301 MW302 MW401 MW402
Range 0 to 1990 µS/cm 0.0 to 10.0 mS/cm 0 to 1990 mg/L (ppm) 0.0 to 10.0 g/L (ppt)
Resolution 10 µS/cm 0.1 mS/cm 10 mg/L (ppm) 0.1 g/L (ppt)
Accuracy (@25°C) ±2% Full Scale ±2% Full Scale ±2% Full Scale ±2% Full Scale
Conversion Factor 0.5 0.5
Calibration Solutions (included) 1413 µS/cm (M10031B) 1413 µS/cm (M10031B) 1382 mg/L (M10032B) 6.44 g/L (M10038B)
Conductivity Probe SE510 (included) SE520 (included) SE510 (included) SE520 (included)
Temperature Compensation automatic, from 5 to 50°C automatic, from 5 to 50°C automatic, from 5 to 50°C automatic, from 5 to 50°C
Environment 0 to 50°C, max RH 95% 0 to 50°C, max RH 95% 0 to 50°C, max RH 95% 0 to 50°C, max RH 95%
Battery Type 1 x 9V alkaline (included) 1 x 9V alkaline (included) 1 x 9V alkaline (included) 1 x 9V alkaline (included)
Battery Life approx. 300 hours of use approx. 300 hours of use approx. 300 hours of use approx. 300 hours of use
Dimensions 145 x 80 x 40 mm 145 x 80 x 40 mm 145 x 80 x 40 mm 145 x 80 x 40 mm
Weight 220 g (with battery) 220 g (with battery) 220 g (with battery) 220 g (with battery)
MW301/MW302/MW401/MW402
Entry level, inexpensive Conductivity & TDS
Portable Meters for fast and reliable results
EC/TDS
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