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M hough different bands of conductivity meters vary, calibration procedures arc similar for al,.% <br /> of them. A generalized calibration procedure follows: <br /> I: 'urn on the instrument,check the battery,and allow to warm up ifnecessary. <br /> 2. Rinse the conductivity probe and temperature.probe with deionized water then place in <br /> the standard solution. At Forward Landfill conductivities are usually within 500 to 1500 <br /> utnhoA therefore the 1000 umhos/I solution is appropriate to use. <br /> • f <br /> 3. Adj ust the-meter for the appropriate conductivity sole and temperature then read the <br /> conductivity_ <br /> 4_ If required use the "calibrate" a&justmerit on the meter to correct the insuumenL to read <br /> the correct conductivity. <br /> The calibration process will be.recorded on a conductivity cal--bration log:'Copies of calibration- . y <br /> logs for'each individual-instrument are-kept in-a:binder:-at-the-office: The Iogs-are reviewed_ - <br /> periodically to assess whether the.instxurnent is becoming more difficult to c hbtate and <br /> therefore necds adjustment by the manufacturer,or if new probes am-requirccL <br /> Ttfr•bi <br />