Test Procedures
Page 30 of 60
M1393R0
OQ/PQ Operating Instructions
4.6.4
Performing the UV Detector Drift and Noise Test and the Oven Test
To perform the Drift and Noise Test:
a)
Install the flow cell and let the baseline stabilize.
b)
Install the appropriate connection tubing between the Ultimate and the FAMOS injection
valve and connect the restriction capillary that is provided to the outlet of the flow cell
as described in Section 3.2.2 A.
c)
Set the pump to the appropriate flow rate. Use 0.4
µ
L/min for a NAN version and
4
µ
L/min for CAP configuration and start the flow delivery of the UltiMate Micropump
from the CHROMELEON
control panel.
d)
If the system includes a flow sensor, perform a manual calibration of the CRP value at
this point (e.g. use the F8 key) and execute the ‘CalibrateCRP’ command from the
‘UltiMate_System/Pump/Pump_FlowSensor’ menu. The CRP value should be close to
625 for NAN system or 50 for a CAP system, respectively. The CRP value should not
vary by more than ±10 %.
e)
After equilibration start the sequence ‘XQ_2_UV_Noise and Drift – Oven Test_NAN’ (or
‘_CAP’, respectively).
f)
Make certain to run the appropriate ‘Warm up’ program before (Section 3.2.1.B.3).
g)
Verify that all parameters meet the acceptance criteria (TABLE 2-3). Discard data if
appropriate (Section 4.14).
Note: When a new lamp is installed, optimum performance is obtained after the lamp has
been used for approximately 24 hours. If this test performed on a new lamp, the noise and
drift levels will be larger than the specified values.
