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This Japanese Industrial Standard specifies the general rules applicable to the qualitative analysis and quantitative analysis of inorganic and organic substances using infrared spectrophotometer ¹⁾.

Note ¹⁾ In a broad definition, the term "infrared rays" means electromagnetic waves having wavelength between visible ray and microwaves. In this Standard, however, it is treated as rays in the wavenumber range of 4 000 cm-1 to 400 cm^-1 (wavelengths 2.5 ~m to 25 ~m).