Profile: Buck Research Instruments, LLC specializes in providing hygrometers. We also provide humidity instrumentation, which is available for industrial, laboratory, calibration standard and airborne use, emphasizing high performance chilled mirror technology. We offer hygrometers for industrial use, laboratory use, calibration standard and airborne research. Our chilled mirror hygrometer contains sample chamber, through which the gas to be measured flows. The chamber contains a coolable mirror and an optical system that measures the mirror reflectivity.