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Kennedy/Jenks Consultants <br /> 6.4 Calibration of Conductivity Meter <br /> The probe correction factor should be determined at the beginning and end of each sampling day <br /> as follows: <br /> 1. Check red line and zero point on meter and adjust if necessary. <br /> 2. Rinse probe with deionized water. <br /> 3. Calculate probe correction factor for each standard and average the two values. The probe <br /> correction factor is the ratio of the computed conductivity to the measured conductivity of the <br /> standard solution. <br /> 6.5 Monthly Calibration Procedure <br /> 1. Measure and graph the conductivity meter probe response to known standards throughout the <br /> range of response. <br /> 2. If a linear response is observed, two calibration standards can be used in the field. <br /> 3. If a nonlinear response is observed, more than two field calibration standards will be necessary <br /> in the field. <br /> 6.6 Maintenance <br /> 1. Store meter in case during transport. Immerse probe in deionized water for storage. <br /> 2. Check batteries before taking meter into the field. Carry spare batteries and deionized water for <br /> rinsing probe. <br /> 3. If meter readings are erratic, use a bottle brush and mild acid to clean holes in probe, otherwise, <br /> return meter and probe to factory for repair. <br /> — <br /> Groundwater Protection Work Plan, The Wine Group SOG 6 <br /> Franzia Winery, Ripon, California 2 <br /> gtislrmple minV�1031030120.02 wing p%Og�pats "lanlappmd sNW"spm d,dm <br />