PN 350-025004-09
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Pressure Clamp Tip Attachments
The success of an ATR measurement depends upon the quality of the contact between the sample and
the crystal. Since there is an infinite number of sample shapes and types, a single configuration of the
sample press tip may not be adequate. For this reason, the MIRacle pressure clamp is designed to
accept three different tip attachments, providing the best possible configuration for any given sample.
In addition, the 3 reflection ATR plates are provided with a special plastic swivel tip matching its 6 mm
diameter crystal size.
The swivel tip features an end cap mounted onto a small ball joint. Such design allows the press tip to
move and adjust its position to the shape of the sample and maintain the sample position parallel to the
crystal surface. This tip allows for better positioning and optimal contact of thin materials with the ATR
crystal surface. The swivel tip is used with irregularly shaped samples, films, semi-rigid polymers.
The flat tip attachment is a flat-tipped cone and it is used when analyzing thin films, fibers, small
particles, rubber samples and other elastic polymers. The flat tip may also be used for powdered
samples.
The concave tip was developed specifically to work with granules, large beads and polymer pellets.
The tip features a concave surface, which prevents the sample from escaping from underneath the
press. It also forces the spherical samples to stay in the center of the crystal assuring maximum IR signal
strength. Do not use the concave tip for powdered samples or samples which do not completely protect
the concave edges of the steel tip from pressing against the crystal - this will damage the ATR crystal.
Swivel Tip Flat Tip Concave Tip
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