Ecolab USA Inc.

Elaine Patricia Black

Katherine J Molinaro

Nathan Daniel Peitersen

Tobias Foster

Andrew Michael Jensen

Rodney H Banks

Anthony Wayne Erickson

Nathan Richard Ortmann

Andrew Jensen

Solid rinse aid compositions and methods of making and using the same are disclosed. Solid rinse aid compositions include in a single concentrate composition a pyrithione preservative system to replace conventional preservatives in the isothiazolinone family, such as chloromethylisothiazolinone. Beneficially, the pyrithione preservative systems eliminate the need for any personal protective equipment to handle the solid rinse aid compositions. Methods of making and use using the rinse aids are also disclosed.

Pyrithione preservative system and C1-C12 ethoxylated alcohol in solid rinse aid compositions

Pyrithione preservative system and C1-C12 ethoxylated alcohol in hard surface cleaning products

Pyrithione preservative system in solid rinse aid products

In situ optical analysis of bacterial endospores can be inhibited when the endospores are present within an optically active carrier medium. To help isolate the endospores from the carrier medium, in some examples, the carrier medium is passed through a hydrophobic material that captures the endospores via hydrophobic attraction. Subsequently, a germination fluid and lanthanide source, such as terbium, can be added to the bacterial endospores captured on the hydrophobic material to form a lanthanide-dipicolinic acid complex in the germination fluid. The germination fluid can then be optically analyzed by measuring the fluorometric response of the lanthanide-dipicolinic acid complex to determine a concentration of the bacterial endospores in the carrier medium.

Endospore detection using hydrophobic collection material

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Saint Paul, MN, United States of America

Elaine Patricia Black