Name	Notation	Description	Types	Status
Fluorometry, optical backscattering	400	Measurement of emitted fluorescent light and particulate back...	Concept	stable
Mercury-based thermometry	401	Measurement of temperature using a mercury based column.	Concept	stable
Fluid-based thermometry (excluding mercury)	402	Measurement of temperature using a fluid based column (other ...	Concept	stable
Electrical resistivity	403	Measurement derived from the measurement of electrical resist...	Concept	stable
Electrical conductivity	404	Measurement derived from the measurement of electrical conduc...	Concept	stable
Inductivity	405	Measurement derived from the measurement of magnetic inductan...	Concept	stable
Piezoresistivity	406	Measurement of the change in electrical resistance of a mater...	Concept	stable
HF echo Doppler spectra analysis method (HR radar)	407	Remote sensing of surface currents employing radars frequenci...	Concept	stable
GPS fixes sequence comparison	408	Measurement derived from the difference between two successiv...	Concept	stable
Clark electrode polarographic method	409	The dissolved oxygen concentration by counting the number of ...	Concept	stable
Oxygen luminescence quenching method	410	The fluorescent indicator is a special complex embedded in a ...	Concept	stable
Potentiometric method	411	Ion-sensitive field-effect transistor that responds to proton...	Concept	stable
Radiometry	412	Measurement of the number of photon reaching a surface using ...	Concept	stable