AAS (Atomic absorption spectrophotometer)

AAS (Atomic absorption spectrophotometer) is the analytical device used to measure the concentrations of elements. Atomic absorption is so sensitive that it can measure down to parts per billion of a gram in a sample. Raw materials are examined using this technique to check that major elements are present and that toxic impurities are lower than specified. This is majorly used to identify the presence of toxic metals in the raw materials as well as finished products.