ASD Inc. is now Malvern Panalytical. Malvern Panalytical is the global leader in remote sensing and hyperspectral measurement solutions, providing unparalleled ground truthing results. Our rugged, portable FieldSpec® 4 line of spectroradiometers provides the freedom to rapidly collect high-quality spectra in the field. Trusted by top research experts at thousands of universities and research institutions, ASD’s full-range spectrometers are used in more than 70 countries.