The most commonly used methods to analyze a solid state metal material are optical emission spectrometers and, in some cases, X-Ray Fluorescence. 

Preparation of specimes must be performed in a correct manner, quickly and with the maximum security for the operator. The specimens must be homogeneous and representative, must have a flat and grinded surface with different finishing grades depending on the material in order to minimize the factors that may affect the results especially for the trace elements. 

LP 200 Automatic electric grinder, equipped with dust aspiration system, is the new automatic instrument for the preparation of metallographic samples manufactured by GNR. 

It represents the ideal solution not only for those who have a large number of specimens but also for operator's safety that can carry out the operation with totally free hands without contact with the working area. 

A manual cycle operation is available to perform occasional preparation of samples whose irregular shapes would be unsuitable for automatic mode.

LP 200 Automatic electric grinder, with automatic sample loading and unloading, allows the operator to program the entire cycle depending on the type of material to be analyzed. It is possible to select the belt speed, the number of cleaning and the degree of pressure on the specimen. 

The most common materials are Fe, Cu, Al, Co and others.