defr Glossar

Molecular scatter

Scattered light that appears even in gases and liquids containing no particles whatever as a result of molecular disorder. In liquids, this disorder causes density fluctuations that effectively scatter light as if they were particles.

Water's molecular scatter is 7±1 mFTU at a wavelength of 860 nm. This level, a kind of “natural constant”, constitutes a theoretical lower limit for the turbidity achievable by filtration. Inherent brightening effect; Colour compensation

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