PN 350-0453000-02
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Diffuse Reflectance Probe
The diffuse reflectance probe is suitable for solid samples with diffuse surfaces only. Do not submerge
the diffuse reflectance probe in powders or liquids as the tip is without a protective window and
damage to the probe will result.
In collecting a background spectrum, insert the probe tip into provided reference cap. If probe fits
tightly or cannot bottom out on reference loosen set screw on side and insert probe cap. Tighten set
screw to provide enough drag/friction to hold the reference cap in place, yet allow the cap to be
removed. Next the sample spectrum is collected after positioning the probe either touching or within
0.4 mm from the sample. The probe tip is delicate. Avoid exerting a strong pressure on the tip end. The
maximum temperature for the diffuse reflectance probe is 95 °C.
Specular Reflectance Probe
The specular reflectance probe is ideal for smooth non
-diffuse surfaces. In collecting a background
spectrum, insert probe into provided reference cap. If probe fits tightly or cannot bottom out on
reference loosen set screw on side and insert probe cap. Tighten set screw to provide enough
drag/friction to hold the reference cap in place, yet allow the cap to be removed.
Generally, a specular reflectance spectrum is collected
by collecting a background spectrum using the
reference cap with an embedded mirror. Next the sample spectrum is collected after positioning the
probe either touching or within 0.4 mm from the sample. The probe tip is delicate. Avoid exerting a
strong pressure on the tip end. Do not submerge the probe tip in a powder or a liquid as this will result
in damage to the probe. The maximum temperature for the specular reflectance probe is 95 °C.
Suggested Measurement Settings
Wavelength Range:
4000 to 700 cm
-1
(actual range of HWG Accessory MCT version: 5000 to 700 cm
-1
)
Velocity:
Select appropriate speed for MCT detector for your spectrometer Resolution: 4 to 8 cm
-1
Actual measurement parameters will vary based on the experimental conditions and sample material.
