STELZNER® agricultural measurement systems

Measuring in soil and in liquids, with our MULTI ISE for determining individual nutrients and the Pockettester for pH, conductivity and temperature

MW 804

The pocket tester for pH, conductivity and temperature

The MW 804 is a small, waterproof pocket tester for measuring pH and conductivity (EC or TDS). It enables quick and easy measurements in liquids and filtered soil solutions. The temperature is also measured and temperature compensation is carried out.  

It is suitable for use in horticulture, landscaping, aquariums, hydroponics, swimming pools, ponds and in the laboratory. It has an automatic calibration function and a replaceable electrode. It is waterproof against brief immersions (but not suitable for continuous measurement or permanent usage in liquids or in a tank). The device switches off automatically after 8 minutes of non-use.

The conductivity/TDS factor can be selected between 0.45 and 1.00. The temperature coefficient β can be set between 0.0 to 2.4%/°C. The calibration of the pH electrode can be carried out with one or two points. The conductivity needs one calibration point.

30003910 MW 804 € 204,68
Art.-Nr. Article Accessories Cart
30001305 Calibration solution, 12.88 mS/cm, 20 ml bag € 3,57
30003005 pH 4.0 buffer solution 20 ml bag € 3,57
30003006 pH 7.0 buffer solution 20 ml bag € 3,57
30003911 Replacement electrode for MW 804 € 111,86
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Measurement range:
pH: 0.0 to 14.0
Conductivity: 0 to 20 mS/cm
TDS: 0 to 10 ppt
Temperature: 0 to +50 °C
pH: 0.1
    Conductivity: 0.01 mS/cm
TDS: 0.01 ppt
    Temperature: 0.1°C
Accuracy: pH: ± 0.05
    Conductivity / TDS: 2% meas. value
    Temperature: ± 0.5
Display: two-character LCD display
Operating temperature:

0 to +50 °C 

Power supply:
Four 1.5 volt batteries (LR44)
Service life:
approx. 100 hours
Dimensions and weight: 200 x ø 38 mm, 100 g
Special features:



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