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Method for Producing Water Free from Suspended Particles

IP.com Disclosure Number: IPCOM000070228D
Original Publication Date: 1978-Aug-01
Included in the Prior Art Database: 2005-Feb-21

Publishing Venue

IBM

Related People

Authors:
Hamielec, AE Nebenzahl, L Ouano, AC [+details]

Abstract

The low angle laser light scattering (LALLS) photometer is perhaps the most sensitive instrument for detecting suspended particles in liquids. For example, very small suspended solids and micelles (diameter < 0.1 mu m) suspended in water in less than a few parts per million concentration can easily be detected. It is for this reason that precise and accurate molecular weight measurements of water-soluble polymers by light scattering technique are difficult to obtain. Water which is used as solvent in light scattering is usually obtained by a careful, costly and tedious multiple distillation technique. The best water prepared in this manner had a Rayleigh factor of 9 x 10 (the lower the Rayleigh factor, the purer the water).