CPC Subgroup
G01J 3/42 Absorption spectrometry; Double beam spectrometry; Flicker spectrometry; Reflection spectrometry (beam switching arrangements G01J3/08)
Full Title
Spectrometry; Spectrophotometry; Monochromators; Measuring colours > Investigating the spectrum (using colour filters G01J3/51) > Absorption spectrometry; Double beam spectrometry; Flicker spectrometry; Reflection spectrometry (beam switching arrangements G01J3/08)
5 direct subcodes
Child Classifications
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- G01J 3/427 Dual wavelengths spectrometry
- G01J 3/433 Modulation spectrometry; Derivative spectrometry