PN 350-0453000-02
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Use of ATR HWG Probe to Investigate Defects in Tape
ATR is an ideal probe to investigate defects on adhesive tape. In this example a background was
collected while the ATR probe was clean. The sample spectrum was then collected after adhering the
tape sample to the ATR crystal. The resulting spectrum is shown in Figure 8. Other applications for the
ATR accessory include reaction monitoring, skin analysis, and small spot defects.
Figure 8: Spectrum of transparent tape (adhesive side) collected with the ZnSe ATR probe
Precautions
SAFETY
Caution should be used when handling and using ATR crystals since some of the materials can be
hazardous. Specifically, zinc selenide is a heavy metal material and should be handled with this in mind.
If the crystal is broken or pulverized, the dust may be harmful by inhalation, ingestion, or skin
absorption.
HWG Probe Assembly Handling
Hollow waveguide assemblies are fragile. Do not bend past their minimum bend radius of 150 mm. Do
not expose probes to shock. Do not drop as they may get damaged. Do
not fl
ex or stress the probe and
waveguide interface. Use caution when analyzing powder samples with diffuse and specular reflectance
probes. Stay within the prescribed temperature limit for each probe.
0.50
0.55
0.60
0.65
0.70
0.75
0.80
0.85
0.90
0.95
1.00
T
1000
2000
3000
4000
Wavenumbers (cm-1)
