Analyzing Samples 
24  Agilent Cary 630 FTIR Spectrometer User’s Guide 
NOTE 
To ensure accuracy of the measurement, it is recommended that the system is 
configured in the software to collect a background spectrum before every sample 
is analyzed. This provides a baseline profile of the system conditions with no 
sample loaded on the instrument. By collecting a background automatically 
before each sample measurement, negative effects of changes in the 
environment can be avoided. 
This section covers specific instructions for how to analyze a sample 
with each sampling accessory, as well as how to interchange 
accessories. 
Interchanging Sampling Accessories 
To switch between different sampling accessories: 
1  Before attempting to change the sampling accessory, ensure that 
the Cary 630 FTIR system is on a solid surface with the accessory 
facing towards you.  
2  To remove an installed sampling accessory, push the retaining 
lever located on the right side of the instrument to the side. While 
pushing the lever to the side, slide the accessory upwards to 
remove it from the main Cary 630 FTIR unit. 
 
 
Figure 4. Interchanging sample accessories 
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