Stable turbidity calibration standards

Details Stable turbidity calibration standards Stable turbidity calibration standards

2008-08-21

2010-11-30

Toatley, Gregory J (Department: 2877)

Optics: measuring and testing

Standard

For fluid suspended particles

C356S442000

Reexamination Certificate

active

07843560

ABSTRACT:
The present invention relates to a turbidity calibration standard comprising: a number of from 1 to 5 sequentially-interfaced layers, wherein each layer independently comprises a light-permeable polymer or light-permeable interpolymer; a measured light transmission modulating amount of at least one light transmission modulator, which is distributed in any one or more of the layers; and a light-permeable container, which contains the layers and the at least one light transmission modulator. Also, the invention relates to methods of making and using the standard, and kits comprising the standard.

REFERENCES:
patent: 2471959 (1949-05-01), Hunt
patent: 3113114 (1963-12-01), Maginn et al.
patent: 5272236 (1993-12-01), Lai et al.
patent: 5278272 (1994-01-01), Lai et al.
patent: 5324802 (1994-06-01), Krieg
patent: 5665800 (1997-09-01), Lai et al.
patent: 7217763 (2007-05-01), Choi et al.
patent: WO 2004/053468 (2004-06-01), None
Cantow Manfred J.R., “Turbidimetric Titration”, Polymer Fractionation, 1967, 191-211, Academic Press.
J. T. Cabral et al, “Discrete combinatorial investigation of polymer mixture phase boundaries”, Measurement Science and Technology, 2005, 191-198, vol. 16, No. 1, IOP Publishing Ltd.
G. Chawla et al, “High-throughput Polymorph Screening of Pharmaceutical-‘Farming for Crystal Mutants’”, Screening & Image Analysis, Business Briefing: Future Drug Discovery, 2004, 66-72.
Jose et al., “Automated Image Analysis of Polymer Beads and Size Distribution”, Industrial & Engineering Chemistry Research, 2005, 8659-8662, vol. 44, American Chemical Society.
Sadar, “Turbidity Science”, Technical Information Series-Booklet No. 11, 1998, Hach Company.
“Amco Clear Products for Water Testing and Turbidity”, GFS Chemicals, Jul. 17, 2007, http://www.gfschemicals.com/productcatalog/Amco—Clear—Information.asp.
“Determination of Turbidity by Nephelometry”, Methods for Chemical Analysis of Water and Wastes, Method 180.1, Revision 2, Cincinnati, Ohio, Aug. 1993.
“NIST-Traceable”, Laboratory Network.com, Jul. 7, 2000, http://www.laboratorynetwork.com/Content
ews/article.asp.
“Turbidity”, Turbidity Measurement 101 Brochure, FTS Forest Technology Systems Ltd., Victoria, British Columbia, Canada.

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