Capacitance meters, due to variations in grain packing, may not produce such accurate results as resistance meters, which normally use a more homogeneous ground or compressed sample. Reliability - a measure of variation between meters when measuring the moisture content of the same sample. Meters should be regularly checked and calibrated to ensure reliability. Range of commodity - calibrations will be necessary for all the commodities of interest, and the meter must be capable of accommodating them. Ambient effect - meter readings vary with temperature, and correction is required.
Some meters automatically display the corrected moisture content.