Wherever possible, preventive action should be taken to reduce or eliminate the build-up of static charges on samples and weighing containers, to avoid any errors, instability, or the frustratingly slow release of weighing results. Some of the precautions to mitigate static charges include: Ensuring adequate air humidity (≥ 45%) Using antistatic weighing containers (metal is ideal) Avoiding rubbing containers Using a metal dish with high sides to help shield the sample from electric fields Discharging the sample and container with an ionizer before weighing METTLER TOLEDO XPR analytical balances incorporate the patented StaticDetect sensor, which automatically detects electrostatic charge on a sample and/or its container. The balance measures the weighing error and provides a warning if the user-defined limit is exceeded. The synchronized operation of an ionizer with StaticDetect automatically removes the electrostatic charge on the object being weighed.
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