Product Group Specifications
Instruction Manual
Instruction Manual

MW402 Standard Portable TDS Meter (range: from 0.0 to 10.0 g/l)

MW402 is TDS Portable Meter, with Automatic Temperature Compensation, and is ideal for the educational and agricultural markets. Soil conductivity is checked before fertilizer application to pinpoint field needs and after fertilization to establish its effectiveness. The EC testing provides all agricultural operation with a method to optimize chemical applications and minimize operational cost.

This instrument has been designed to meet the Grower's need for equipment suited to the aggressive environments found in agricultural and hydroponics applications.

MW402 has a range of 0.0 to 10.0 g/L (ppt) with a 0.1 g/L resolution. The meter is supplied complete with TDS probe with 1 meter cable and calibration solution.


Protective hard shell case (optional)


Conductivity/TDS probe with DIN connector and 1 m cable

Calibration, Maintenance & Cleaning Solutions
Choose from our wide selection of calibration, maintenance and cleaning solutions.
Range 0.0 to 10.0 g/l (ppt)
Resolution 0.1 g/l (ppt)
Accuracy ±2% Full Scale
Conversion Factor 0.5
Calibration Solutions (included) 6.44 g/l (M10038B)
Conductivity Probe SE520 (included)
Temperature Compensation automatic, from 5 to 50°C
Environment 0 to 50°C / 32 to 122°F; max RH 95%
Battery Type 1 x 9V (included)
Battery Life approx. 300 hours of continuous use
Dimensions 145 x 80 x 40 mm
Weight 220 g (with battery)

SE520 Conductivity/TDS probe with DIN connector
and 1 m cable
M10038B 6.44 ppt (g/l) calibration solution,
20 ml (25 pcs)
MA9062 1382 ppm TDS solution, 230 ml bottle
MA6370 Protective hard shell case
MW402 is supplied complete with SE520 EC probe, 20 mL 6.44 ppt sachet of calibration solution, screwdriver for calibration, 9V battery and instructions.