PRESIDIUM Synthetic Ruby Identifier Manual Del Usuario página 23

Adjust the lever to lower the LED light source and secure the
gemstone in place on the Photo-detector for testing (Fig 2.5).
Fig.2.5 Adjust the LED light source downwards to secure the
gemstone in place on the Photo-detector
Close the lid and press the "Start Test" button.
The button will begin to blink in white whilst the test is being
performed. When the test is complete, the button will be lit in a steady
white light and your test results will be displayed in the 7 Indicator
Lights. You should see your results within 2 seconds.
Users are recommended to place each ruby stone in at least 4
different positions since the test results could be influenced by the
positioning of the ruby. Always place the flattest face of the stone on
the Photo-detector.
To understand your test results, refer to Section 3 in this book –
"Reading test results on your Synthetic Ruby Identifier".
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