HI 9811-5 allows you to measure PH, EC (conductivity), TDS, and
Temperature with just one instrument! This meter has a full-spectrum pH measurement range.
Knowing your solution temperature is important.
Ph strips and a pocket TDS meter get the job done. But when you are ready to pamper yourself and step up to the ease, accuracy, and reliability of a professional combination meter, this is the one we like. It does it all, and in the correct ranges.
This portable meter uses the 4-in-1 replaceable probe HI 9811-5, which measures pH/EC/TDS and Temperature. Included, not shown.
HI 9811-5 is equipped with Automatic Temperature Compensation (ATC). The Battery Error Prevention System (BEPS) alerts the user when low batteries could adversely affect your readings.
HI 9811-5: Ph, Conductivity to 6000 µS/cm, TDS to 3,000 ppm, and Temperature with a Water-Resistant Meter
The EC range goes to 6000 uS/cm. In the TDS range the HI-9811-5 uses a conversion factor from 0.56 to 0.72 for fertilizer readings, to ensure your measurements fully conform to industry standards.
The specially engineered HI 1285-5 probe is interchangeable and the pH electrode utilizes a fiber junction and gel electrolyte which are particularly suitable when used in fertilizer solutions.
The HI-9811-5 measure TDS in the 0 to 3000 ppm range.
Range pH 0.0 to 14.0 pH
Range EC 0.00 to 6000 uS/cm
Range TDS 0 to 3000 ppm (mg/L)
Resolution pH 0.1 pH
Resolution EC 0.01 mS/cm
Resolution TDS 1 ppm (mg/L)
Accuracy pH ±0.1 pH
Accuracy EC ±2% F.S.
Accuracy TDS ±2% F.S.
TDS Conversion Factor 0.56 to 0.72 ppm = 1 µS/cm
Calibration: manual at 1 point (all parameters except temperature)
Temperature Compensation: automatic, 0 to 50°C with ß = 2%/°C (EC/TDS only)
Probe HI 1285-5 pH/EC/TDS, 1 m cable (included)
Battery Type / Life 1 x 9V / approx. 150 hours of continuous use
Environment 0 to 50°C (32 to 122°F); RH max 100%
Dimensions 165 x 75 x 45 mm (6.9 x 2.9 x1.8")
Weight 180 g (6.3 oz.)