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NOTE: Perform Reference Standardization immediately after changing the spot
size, to have the proper reference correction loaded in the instrument.
5.4 Iris Adapter
When scanning stationary objects, the “Use
Iris” selection must be clicked. (Stationary
objects need not be moved across the sample
window for averaging.)
Use the Iris Adapter for centering. Close the
aperture around the object to center it, then
open the aperture to avoid reflecting light back
from the aperture itself.
5.4.1 Installation of Iris Adapter:
The Iris Adapter is used for round sample cups,
beakers, vials, and other stationary samples.
NOTE: Set the Select Tray dialog box to “Use Iris”.
Align the holes in the Iris Adapter with the pins on
the sample platform, and carefully lower into place.
The pins hold the Iris Adapter securely in position
over the sample window.
Use the adjustment lever to open the iris as needed.
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