Zeta Potential: A Complete Course in 5 Minutes

zeta -Meter andColloid BehaviorZeta potential can help youunderstand and control colloidalsuspensions. Examples includecomplex biological systems such asblood and functional ones like suspensions can be asthick as paste (like cement) or asdilute as the turbidity particles ina lake. Water, milk, wine, clay,dyes, inks, paper and pharmaceu-ticals are good examples of usefulcolloidal systems. Water is a com-mon suspending liquid, althoughnon-aqueous liquids are used aswell. In many cases, the perform-ance of a suspension can be im-proved by understanding the effectof colloidal behavior on such prop-erties as viscosity, settling andeffective particle can often tailor the charac-teristics of a suspension by under-standing how individual colloidsinteract with one another. At timeswe may want to maximize thebehavior of concentrated suspen-sions. On standing, a weak matrixof flocculant particles is prevents the closely packedsediment that would form andcause caking problems if the par-ticles were highly stabilized andremained completely forces at the interface ofthe particle and the liquid are veryimportant because of the micro-scopic size of the colloids.

Zeta-Meter Inc. 3 Zeta Potential The double layer is formed in order to neutralize the charged col-loid and, in turn, causes an elec-trokinetic potential between the

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