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3.1.4. Shaft / Vessel Verticality
The verticality of each shaft of the instrument is verified using an
appropriate leveling device. This measurement is taken by placing a level
against each shaft while the spindles are idle. For this measurement, the
drive unit is placed in operating position (fully lowered). The shaft
verticality measurement may be taken on a portion of the shaft raised
above the drive unit. Other similar methods may be used to verify this
parameter.
If applicable, the vessel verticality measurement is also taken according
to the description outlined in the ASTM 2503-07 Mechanical Calibration of
Dissolution Apparatus 1 and 2 protocol. Alternate level devices may be
utilized to perform this measurement. Move the appropriate tool and
repeat this procedure for all applicable vessel positions.
3.2. Temperature(s)
3.2.1. External Vessel Temperature (EVT) Probe
Versions of the 708-DS dissolution apparatus that are not configured with
the AutoTemp option may include an EVT Probe that allows for individual
vessel temperatures to be recorded and printed. The EVT Probe is stored
on the left side of the vessel plate behind the water bath.
To take and record measurements with this device, place the probe in
one of the dissolution vessels. Allow the temperature of the probe to
equilibrate (approximately 30 seconds). Press the Sample Temperature
button (shown in Figure 3-4).
The Sample Temperatures window displays. The current Bath
Temperature is displayed in the Bath Probe region. The current EVT
Probe temperature is displayed in the Probe region.
Revision A
P/N: xx-xxxx
Figure 3-4. 708-DS Sample Temperature Button
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Agilent 708-DS Dissolution Apparatus
Training Manual
September 2010
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