Mass spectrometers

Mass spectrometers are analytical instruments that measure the mass-to-charge ratio of ionised molecules, identifying and quantifying the compounds in a sample from the pattern of ions they produce. They sit at the centre of modern analytical chemistry, from drug metabolite screening to environmental residue work and protein sequencing. The Questpair catalogue holds 791 listings in this category, offered by 18 verified suppliers and distributors across 9 countries. Of those listings, 99 percent are used. New, used and refurbished units all appear, and prices range from EUR 1 to EUR 258.267, so both a single ion source and a complete analyser reach the same catalogue.