| US 7,333,194 B2 | ||
| Photometric analysis | ||
| Ivars Jaunakais, Rock Hill, S.C. (US); and Sanjay Mohan Anand, Charlotte, N.C. (US) | ||
| Assigned to Industrial Test Systems, Inc., Rock Hill, S.C. (US) | ||
| Filed on Jun. 22, 2005, as Appl. No. 11/157,944. | ||
| Application 11/157944 is a continuation in part of application No. 11/117536, filed on Apr. 29, 2005. | ||
| Application 11/117536 is a continuation in part of application No. 10/949315, filed on Sep. 27, 2004. | ||
| Prior Publication US 2006/0066858 A1, Mar. 30, 2006 | ||
| Int. Cl. G01N 21/01 (2006.01) | ||
| U.S. Cl. 356—246 | 23 Claims |
| 1. A photometric analytical method comprising
disposing a photometric cell containing an aqueous sample to be analyzed, in a photometric instrument;
obtaining a blank reading;
then moving a portion of a support of a reagent delivery device in said aqueous sample wherein said photometric cell remains
disposed in said photometric instrument, to deliver from the reagent delivery device support into said aqueous sample an effective
amount of at least one water soluble analytical agent for photometric analysis, and also to provide a mixing action;
thereafter withdrawing said reagent delivery device from the resulting liquid in said photometric cell; and
thereafter photometrically analyzing the liquid in said photometric cell;
wherein said photometric cell remains in said photometric instrument until after the photometric analysis.
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