Particle sizer method same as laser diffraction method?

[gwemon]

The definition of particle sizer as an analytical method for particle size distribution does not mention laser diffraction. Should it? Have all particle sizers used the laser diffraction method up until now? From a quick search this seems to be the case. See e.g.
https://en.wikipedia.org/wiki/Particle-size_distribution
https://www.labcompare.com/Laboratory-Analytical-Instruments/32-Particle-Size-Analyzer-Particle-Analyzers-Particle-Sizer/
but see also https://www.atascientific.com.au/particle-size-analysers-work/

[gwemon]

see also http://vocab.nerc.ac.uk/collection/S04/current/S04224/

[gwemon]

S04 already contain terms for laser diffraction method:
laser diffraction
dry laser diffraction
wet laser diffraction