M1 Metal Test Weights
Where should you store your calibration weights?
Whether they are cast iron, brass or any other type of test weight it is important that you store them correctly to avoid dust and atmospheric pollution from skewing its correct weight. If used regulary these wreights should be stored ina dedicated wooden or plastic case that has individual compartments. Metal test weight should under no circumstance be left on shelves or in a workplace open to harsh elements or dusty environments.
How to clean calibration weights
Routinely dusting and soft-bristled brushes are the best tools for dusting weights prior to each use; however, they should not be cleaned more thoroughly unless it is absolutely necessary. When cleaning is more extensive, the weight may change, so measure the weight before cleaning and again afterwards to ensure that it hasn't changed.