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Figure 25. The PTFE standard fits into the sample cup.

b) Fit the aperture onto the sample cup.

c) Place the sample cup over the reflectance or transmission port.

Note

It is recommended that you use the same aperture size to run the baseline as the

one you are going to use for the sample.

d) Click the Zero/Baseline button in the Scan application to collect the 100% T

baseline.

e) If you are performing a reflectance measurement, remove the PTFE standard

from the sample cup and replace the sample cup at the reflectance port with the

aperture attached. If you are performing a transmission measurement, block the

transmission port with a blocking plate.

f) Click the Zero/Baseline button to collect the 0% T baseline.

g) Once the baseline is complete the ordinate status reading will display 'Zero

Baseline' in red text.

Installing the polarizer

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