Dimpler Grinder TEM DG 200 is a mechanical thinning instrument, designed for the reproducible preparation of high quality electron microscopy specimen, greatly reducing ion milling time, uneven thinning and surface defects.

The TEM DG 200 Dimpler Grinder reduces central region of a typical 150 micron thick specimen down to 10 micron with minimal damage to the specimen while preserving strong thick specimen rim. Specimen stub can mount 3mm diameter specimen with high precision using the special engraved ring. This can be achieved by using low melting point specimen mounting wax and Mascotek Hot Plate TEM HP 150. Machine has facility to vary the grinding / polishing wheel speed up to 300 rpm while ensuring minimal vibration during grinding and also have facility to adjust load from 0 to 40 gm. Positioning of the specimen can be observed by using 45X optical microscope.

Both grinding and polishing operations ensure specimen readiness for subsequent twin jet electropolishing or ion beam milling to achieve sufficiently large area electron transparency for TEM imaging. The machine is capable of monitoring the dimple grinding process and displays actual grinding thickness.

The Dimpler Grinder is equipped with an analog dial indicator which gives a continuous display of the dimpling depth and has timer based auto termination. The system enables accurate dimpling to be performed with prior knowledge of the specimen thickness.

The dimpler grinder can incorporate different types of wheels:

• Grinding wheels offered in different materials suitable for grinding wide variety of specimen material
• Polishing wheels for an optimal surface fi nish
• Grinding and polishing wheels of 15mm and 20mm diameter suitable for different dimpling profiles