Product frame as disclosing the spectroscopy for being able to carry out the MID INFRARED of a sample using the light of MID INFRARED. Specimen holder includes an inlet port and a sample room comprising fluidly connects inlet port area and capillary channel such as sample area. Capillary channel is characterized in that a kind of higher capillary power than sample area. As a result, including when contacting of sample when inlet port is placed on a kind of liquid, liquid is inhaled into sample area, the composition for the bubble that can not be analyzed with blur optical. In some embodiments, inlet port is the free end of a lens barrel, and there is the draw place on a patient to be less than an outer diameter of minimum spacing between pain receptor, mitigates pain felt by patient, due to the insertion of the lens barrel in draw place.
