HI 8033 is a hand-held conductivity meter with the ability to take measurements in 3 different conductivity ranges, 0.0 to 199.9 µS/cm, 0 to 1999 µS/cm and 0.00 to 19.99 mS/cm and 1 TDS range: 0 to 19990 ppm CaCO3.The probe uses the 4-ring potentiometric method which measures conductivity with the utmost accuracy and reliability.The four stainless steel rings are embedded in the resin shaft of the probe to create a smooth surface for fast and easy cleaning.To improve accuracy, temperature compensation can be performed with a knob on the front panel of the meter.