definition
An optical instrument for measuring the absorption of light by chemical substances; typically it will plot a graph of absorption versus wavelength or frequency, and the patterns produced are used to identify the substances present, and their internal structure.
A total of 24 sources were observed with one or both transmission grating spectrometers, from which 19 gave a useful spectrum.
There are also two new isotope ratio mass spectrometers for in vivo studies of energy and protein metabolism in patients.
Additional species can be measured with portable Fourier transform infrared spectrometers.
Their experience in selling fiber optic based spectrometers makes them ideally placed to promote the nkd in the Japanese market.