Nalco Company

Patrick J Macuch

Sergey M Shevchenko

Michael J Murcia

Paul B Desch

The current invention relates to a bracket for use in conjunction with test coupons to allow for the consistent and long term monitoring of corrosive elements in a facility. The invention is able to have multiple coupons attached to a single bracket allowing for the testing various corrosive elements. Additionally the coupons can be placed at varying angles and locations to allow for a more complete analysis of the environments.

Corrosion rack and method of monitoring corrosive elements

A method for monitoring one or more deposits including microbiological deposits on a surface immersed in an aqueous medium of a process is disclosed. The method comprises: (a) providing a QCM that is in contact with an aqueous medium, wherein said QCM has a top side surface contacting the aqueous medium, and a second, bottom side surface isolated from the aqueous medium; (b) providing a composition that is selective for one or more deposit types, including microbiological deposits without the use of an antigen or an antibody; (c) applying said composition to the top side of said QCM surface; (d) measuring the rate of deposition of said deposits from the aqueous medium onto the top side of said QCM surface; and (e) optionally taking corrective action to change one or more process parameters, or chemistry applied to the process, or a combination thereof, to achieve a desired result in regards to microbiological deposition.

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Naperville, IL, United States of America

Patrick J Macuch