​​Ideal for hydroponics and agriculture applications, the HI98330 GroLine® Nutrient Tester accurately measures the electrical conductivity (EC) in mS/cm and the total dissolved solids (TDS) conversion in parts per million (ppm) of the nutrients in water.
Suitable for plants that need a higher EC, the tester features an extended range up to 6.0 mS/cm (EC), 3000 ppm (500 ppm scale), and 4200 ppm (700 ppm scale).
The IP67 waterproof rated and floating casing houses the EC graphite electrodes and temperature sensor, and is suitable for stirring and testing simultaneously.
 
Conductivity Range: 0.2 to 6.0 mS/cm (dS/m)
Conductivity Resolution: 0.1 mS/cm (dS/m)
 
TDS Range: [500ppm scale] 100 to 3000 ppm 
                    : [700ppm scale] 140 to 4200 ppm
TDS Resolution
: [500ppm scale] 50 ppm (100 to 2000 ppm)
: [500ppm scale] 125 ppm (2000 to 3000 ppm)
: [700ppm] 70 ppm (140 to 2800 ppm)
: [700ppm] 175 ppm (2800 to 4200 ppm)