Sample clamp for a spectroscopic instrument

A sample clamp comprising:

• a first jaw comprising a first inner surface and a first outer surface;
• a second jaw comprising a second inner surface and a lip, wherein the lip contacts the first jaw and the second jaw, thereby providing a light barrier spanning a gap between the first jaw and the second jaw;
• a hinge oriented in a direction of a first axis (X), the hinge connecting the first jaw to the second jaw;
• wherein a clamping space defined between the first inner surface and the second inner surface is configured for clamping a cylindrical object longitudinally extending in the direction of the first axis;
• a conduit extending in a direction of a second axis (Y) for optically connecting the clamping space to the first outer surface;
• and
• an adaptor configured to couple the sample clamp to a spectrometer at more than one tilt angle (α) with respect to the spectrometer.