Inspection methods are specified in 6. Points related to wavenumber (precision), 0 % transmittance, 100 % transmittance, linearity, resolution, and repeatability are specified. I will briefly describe the methods. In December 2023, the Indian Good Manufacturing Practices (GMP) and Requirements of Premises, Plant and Equipment for Pharmaceutical Products regulations (Schedule M) were revised, with Section 12 stating: The guidelines published by the World Health Organization (WHO) on following aspects relating. Note: Mandatory requirements in this annex are defined using the terms “shall” or “must”. The use of “should” indicates a recommendation. The areas of implementation include the quality manual, equipment records, calibration method G ide 25; Qual ements for the competence of calibration and testing laboratories (ISO/IEC Guide 25). This. Solutions in spectroscopy encompass a wide range of options. Spectroscopic instruments may be utilized to provide comprehensive analyses of materials or for. Spectrophotometry is a method to measure how much a chemical substance absorbs or transmits light by passing a beam of light through a solution of the substance of interest, and measuring the light intensity emitted. It is a quantitative measurement; the concentration of an analyte in a solution.