Standard solution with cleaning reagent for wet chemistry analyzer

Patent metadata

Field	Value
Publication number	US-9945830-B2
Application number	US-201615003042-A
Country	US
Kind code	B2
Filing date	Jan 21, 2016
Priority date	Jan 21, 2016
Publication date	Apr 17, 2018
Grant date	Apr 17, 2018

Abstract

A calibration solution for a wet chemistry analyzer is provided. The solution comprises a calibration agent. The solution also comprises a cleaning agent. The cleaning agent is selected such that the wet chemistry analyzer is simultaneously cleaned and calibrated.

First claim

What is claimed is:

1. A calibration solution for a wet chemistry analyzer, the calibration solution comprising:
a calibration agent;
a cleaning agent comprising a strong base; and
wherein the cleaning agent is selected such that the wet chemistry analyzer is simultaneously cleaned and calibrated.

2. The solution of claim 1 , wherein the cleaning agent is selected at least in part based on a reagent used in the wet chemistry analyzer.

3. The solution of claim 1 , wherein the cleaning agent comprises sodium hydroxide.

4. The solution of claim 3 , wherein the cleaning agent comprises at least 0.01% by weight sodium hydroxide.

5. A wet chemistry analyzer comprising:
a reaction chamber configured to house a reaction mixture and configured to conduct a reaction with a reagent within the reaction mixture;
a detector configured to detect a process variable indicative of the reaction mixture;
a reagent housing configured to house a calibration fluid; and
wherein the calibration fluid comprises a calibration agent and a cleaning agent, and wherein the calibration fluid is configured to simultaneously clean and calibrate the wet chemistry analyzer during a calibration cycle.

6. The analyzer of claim 5 , wherein the calibration fluid comprises a cleaning agent.

7. The analyzer of claim 6 , wherein the cleaning agent is selected to react with a component of the reaction mixture.

8. The analyzer of claim 6 , wherein the cleaning agent comprises a strong base.

9. The analyzer of claim 6 , wherein the cleaning agent comprises a strong acid.

10. The analyzer of claim 5 , wherein the calibration cycle comprises providing the calibration fluid through the analyzer such that it fluidically contacts a surface configured to receive the reaction mixture.

Assignees

• Rosemount Analytical Inc
• Rosemount Inc

Inventors

• Feng Chang-Dong
• Nguyen Hoang Minh

Classifications

• G01N33/18 Primary

  Water · CPC title

• G01N27/4163

  checking the operation of, or calibrating, the measuring apparatus (G01N27/3274, G01N27/4175 and G01N33/0006 take precedence) · CPC title

• G01N33/182 Primary

  Specific anions in water · CPC title

• G01N21/31 Primary

  Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry {(G01N21/72 takes precedence)} · CPC title

• G01N21/59

  Transmissivity (G01N21/25 takes precedence) · CPC title