Ecolab USA Inc.

Evan Hendrickson

Robert D P Hei

Rodney H Banks

Ramakrishnan Balasubramanian

Caleb Power

Richard Joseph Walsh

Andrew Steven Wold

A calibration material may be used to calibrate an optical sensor to help ensure that the optical sensor produces accurate measurements. In some examples, the calibration material may be used to calibrate both turbidity measurements made by an optical sensor and fluorometric measurements made by the same optical sensor. The calibration material may be an aqueous mixture that includes water in an amount greater than 70 percent by weight of the composition, inorganic, water-insoluble, light-scattering particles, and a viscosity modifier in an amount effective to maintain the inorganic, water-insoluble, light-scattering particles in suspension in the composition. The composition can be non-fluorescing when exposed to ultraviolet light. In addition, in some applications, the composition is formulated of food safe ingredients, allowing the composition to be used in facilities that process consumable foods and beverages.

Techniques and materials for calibrating optical sensors

The present invention is directed to low solid surface coating compositions and methods of using the same. The low solid surface coating compositions comprise a self-crosslinking polymer, a solvent, a surfactant, and water. The low solid surface coating compositions can preferably have a total solid content of less than 15%.

Low solids surface coating compositions and use thereof

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Saint Louis Park, MN, United States of America

Evan Hendrickson