analytical chemistry 

https://doi.org/10.1351/goldbook.08003
Scientific discipline that develops and applies strategies, instruments, and procedures to obtain information on the composition and nature of matter in space and time.
Notes:
  1. The definition was coined by the Working Party on Analytical Chemistry (WPAC) of the Federation of European Chemical Societies (FECS) and is known as the "Edinburgh Definition".
  2. The term "analytical science" was coined in 1998 to emphasize the impact of informatics on analytical chemistry.
See also: chemical analysis
Source:
PAC, 2021, 93, 997. 'Metrological and quality concepts in analytical chemistry (IUPAC Recommendations 2021)' on page 999 (https://doi.org/10.1515/pac-2019-0819)