
Baseline tab
Correction Zero x std ref correction
Autostore tab
File Storage: Storage Storage on (prompt at start)
Place the reference disk or SRM in the DRA.
Run a baseline as follows:
1. Select the Baseline button in the Scan dialog box. Follow the on-screen
prompts to perform a 100%T baseline scan and a 0%T baseline scan.
Hot Tip
When collecting the 0%T baseline scan do not block the beam instead, remove
the PTFE reference disk from the reflectance port and allow the light to be
trapped by the Extended sample compartment.
2. Once the baseline correction is complete, the Ordinate status display in the top
left corner of the dialog box will show 'Zero baseline' in red text.
3. Clamp the sample over the reflectance port. The sample should be
homogeneous, substantially flat, and large enough to completely cover the
image.
4. Click the Start button. The Save As dialog box will appear, allowing the
method to be saved as either a data file or a batch file. If the file is saved as a
batch file, all of the method parameters will be stored with the scan. The
sample will be auto-corrected for 100%T, 0%T and Standard Reference.
5. Place your sample in the DRA and click Start.
The Cary will scan your sample and automatically perform the ASTM correction.
Maintenance and cleaning
The performance of the integrating sphere is dependent on the efficiency of the
coating on the sphere and the reference plates, and the cleanliness of the optical
components of the accessory.
The mirrors are over-coated with quartz so the aluminium layer is protected. To clean
the mirrors either place them in an ultrasonic bath or gently flush ethanol across the
surface of the mirror, using a cotton wool bud to gently wipe marks from the surface
of the mirror.
Hot Tip
Holding the mirror under a bright light will show up any marks on the surface of
the mirror.
Never clean the mirrors with abrasive cleaners or tissue paper.
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