PRESIDIUM Synthetic Diamond Screener II Bedienungsanleitung Seite 20

2.1 For testing on loose diamond
Ensure your loose diamond stone is wide enough to cover the
testing area. It should be approximately 1.5 mm in width. Your
diamond should also not exceed 5 mm in height to ensure that the
UV wavelength transmitted by the UV light source can be accurately
measured.
Place the diamond stone over the testing area (Fig 2.3).
The table of the stone should be placed face-down on the testing
area. Ensure that the testing area is completely covered by the
diamond so that the emitted wavelength will pass through the stone
material and not erroneously through other material which can then
give an inaccurate reading of the UV light absorption ability of the
diamond.
Fig.2.3 Location of the loose diamond
over the testing area
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