Stereo binocular microscopes

A low-power stereo binocular microscope is used to characterize and select suspected asbestos types fibers for further examination. Evaluation of the fibrous nature, color, luster, elasticity, flexibility, and other handling properties allows the detection and subsequent identification of asbestos in bulk materials at levels down to 10 mg kg... 

Examine specimens with a stereo-binocular microscope... 

The SCF method uses a very small precrack introduced by a Knoop indenter. This method of relying on the material s brittleness to cause small surface precracks to form underneath an indention is unique to ceramics. The precrack is small and on the order of real flaws in ceramics. Thus, fractographic techniques, and some care and skill, are needed to see and measure the size of the precrack. Both the cracks depth and the width must be measured for the SCF precrack. Crack detection and the size measurement is aided by purposely tilting the test specimen 1 /2° relative to the indenter so that the precrack and fast fracture regions are not coplanar. As a result, the precrack in some materials is easy to discern, even with a low power stereo binocular microscope. In other materials, a careful examination with a scanning... 

The single most important preparation instrument in the microscopy laboratory is the stereo binocular microscope. These instruments are inexpensive and readily available. Materials may be observed in either transmitted or reflected light, and the result often provides insights into the problem. Even rather large parts may be examined as part of the important first step in choosing the area of a sample to be analyzed. 

S. Examine specimens with the naked eye and with a stereo binocular microscope... 

T 2. Can optical microscopy provide an Yes First try a stereo binocular microscope to select a sample for... 

Binocular stereo microscopes [17] are compound microscopes that provide two different images of the specimen through the two eyepieces. These are views from slightly different directions. The observer sees this as a... 

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