Milton Roy Company

University of Delaware

Steven K Dentel

Robert F Bean

Ahmad I Jamrah

Purification of water with clay modified by cationic surfactant permits treatment of water with multiple impurities.

Selective adsorption of organic material from water by modified clays

In a streaming current detector, a standard calibration solution is used to calibrate the streaming current signal representing the charged condition in a sample fluid containing particles. The standard calibration solution is electrokinetically stable over a wide range of pH and concentration. Calibration allows direct comparison of readings from different streaming current detectors.

Calibration of streaming current detection

A streaming current detector has a reciprocating piston with a sensing region having a uniform clearance from the casing which is sufficiently large to avoid significant shearing of the particles in the fluid of the sample stream. A separate guiding region of the piston has a sufficiently tight fit in the casing for smooth reciprocation. A relief region of the piston has the largest clearance from the casing to provide a sufficiently large area to control a constant low velocity of the sample fluid.

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Newark, DE, United States of America

Steven K Dentel