201-40 Fisher sub sieve sizer and laser particle size analyzer
Both the fisher sub sieve sizer and laser particle size analyzer are used to measure the particle size of powder. There is no so called advanced or backward technology between them. They are both commonly used method of testing particle size. The HMKtest fisher sub sieve sizer is based on the American air permeability method. The laser particle size analyzer is based on laser scattering method. The fisher sub sieve sizer is widely used in magnetic materials, cemented carbides and other industries.
Fisher Sub Sieve Sizer https://www.isizer.com/fisher-sub-sieve-sizer-principle/