The PH / EC / TDS / Temp MW803 meter gives you accurate results, it has a screen that shows the results and it is very light.

MW803 PH/EC/TDS/Temperature Tester with Replaceable Electrode

• MW803 is a portable device with a two-level LCD display that measures pH/EC/TDS/Temperature in a single tester.
• The large display shows values ​​in the extended range of 0.00 to 14.00 pH and 0 to 3999 μS/cm, 0 to 2000 ppm (MW803), 0 to 20.00 mS/cm, 0 to 10.00 ppt ( MW804) and simultaneously displays the temperature. 0.0 to 50.0°C or 32.0 to 122.0°F.
• They have a stability indicator and a "HOLD" function that freezes the screen to make it easier to read and record measured values.
• The large screen also has graphic symbols to guide you through all operations.
• The EC/TDS conversion factor is user adjustable, as is the temperature compensation factor (β).

Specifications:

• Measurement range: pH 0.00 to 14.00, EC 0.0 to 3999 mS/cm, TDS 0 to 2000 ppm, temperature 0.0 to 50.0 °C
• Sensitivity: pH 0.01, EC 1 mS/cm, TDS 1 ppm, temperature 0.1°C
• Deviation: pH ± 0.05, EC/TDS ± 2% of full scale, Temp ± 0.5°C
• pH electrode: Mi60P (replaceable)
• Applicable in the environment: 0 to 50°C; maximum relative humidity 100%
• Batteries: 4 x 1.5 V, IEC LR44, A76 (included)
• Battery life: approx. 100 hours of continuous operation
• Dimensions: 254 x 67 x 47mm
• Weight: 220g
• Calibration: automatic 1 step for EC, 1 to 2 steps for pH
• Automatic temperature compensation with β = 0.0 to 2.4%/°C

Combo PH/EC/TDS/Temp Meter MW803

• Operation of the MW803 PH/EC/TDS/Temp Combo Meter:
• Remove protection;
• Turn on the MW803 by pressing the ON/OFF Button;
• Immerse the electrode in the liquid to measure.
• The MW803 automatically compensates temperature in PH/EC/TDS.
• To turn off the meter, press the ON/OFF/CAL button.

Measurement with the MW803 PH/EC/TDS/Temp Combo Meter:

• To choose the PH measurement mode, either EC (µS), or TDS (ppm), press the SET HOLD key to switch from one parameter to another.
• Once the measurement parameter has been chosen, measure by immersing the electrode in two cm of liquid to be measured.
• To measure another parameter, continue using the SET HOLD key.

Calibration of the MW803 PH/EC/TDS/Temp Combo Meter:

• Turn on the meter,
• Using the SET HOLD key, choose the parameter to calibrate (PH, or µS, or ppm), and
• Press the ON/OFF/CAL button until the OFF message is replaced by the CAL message.

The meter is in calibration mode for the chosen parameter. PH Calibration:

• The message “pH7.01 use” appears on the screen, asking to be immersed in pH7.01 calibration liquid.
• The meter will indicate “OK” and will ask to be immersed in pH4.01 liquid.
• After being immersed in pH4.01 liquid, after a few seconds, it will indicate “OK2” which means it is calibrated at 2 points, and it will automatically return to PH measurement mode.

EC Calibration (µS):

TDS Calibration (ppm):

• The message “1382ppm” appears on the screen, asking to be immersed in 1382ppm calibration liquid.
• The meter will indicate “OK” once calibrated, and will automatically return to TDS measurement mode.

Electrode change:

• Unscrew the white ring,
• Remove the Mi60P electrode and change it with a new one,
• Be careful not to damage the connections and without forgetting to place the black rubber on the new electrode.

IMPORTANT for the MW803 PH/EC/TDS/Temp Combo Meter: Never use distilled or deionized water as storage liquid; Also do not use 90º alcohol