Metrohm NIRS XDS MasterLab Analyzer - Manual (Page 42)

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5.6 Universal Tablet Tray
Part Number 3013-243-01
The XDS MasterLab® Analyzer is shipped with
one “Universal Tablet Tray” which may be used
for feasibility studies and low-volume studies on
round tablets.
The tray may also be used for tablets which are
approximately round, however some light
leakage may occur.
It is important to prevent light leakage around
tablets. Therefore a “mask” is provided, to
minimize leakage around the top surface of the
tablet.
Each tablet position is labeled by the “tablet position number” used to select samples in Vision Data
Acquisition. The tablet position number is to the left and just above each tablet. Numbers run from 1
to 19. (There is no position 20 on this tray.)
When selecting the tray in Vision, use the tray size marked “4 x 5”. While there is no upper left tablet
position, to accommodate the instrument reference, the “4 x 5” selection provides for correct sample
positioning. Vision will use the same tablet position number in the selection screen.
This tray contains eight different “bore” sizes,
the diameters of which are given in the table on
the next page. Diameters are selected to fit a
range of round tablet sizes.
Each position contains two bore sizes which
may be used. The upper diagram (at right)
shows a tablet in position A, in the lower
diameter. Maximum tablet size is 0.270”, or
about 6.85 mm. The upper diameter, shown
below, accommodates maximum tablet size of
0.313”, or about 7.95 mm.
Note that the detector height may require adjustment, especially with tablets in the upper diameter