Claims
- 1. A method of measuring concentration of a cleaning agent in a wash liquor, comprising:a) providing a wash liquor comprising a mixture of the cleaning agent, an amount of a reducing sugar proportional to the cleaning agent, and a sugar preserving agent; b) irradiating a portion of the wash liquor with infrared radiation such that the radiation is transmitted through or reflected from the portion of the wash liquor; c) collecting intensity data related to the transmitted or reflected infrared radiation using a detector, d) filtering the collected data to isolate a portion of the data indicative of the reducing sugar included in the wash liquor, wherein a concentration of the reducing sugar is determined directly from the portion of the data indicative of the reducing sugar included in the wash liquor; and e) correlating the portion of the data indicative of the reducing sugar with the concentration of the cleaning agent in the wash liquor.
- 2. A method according to claim 1 wherein the cleaning agent is a surfactant-based neutral cleaner.
- 3. A method according to claim 1 wherein the cleaning agent is selected from the group consisting of a water-based lubricant, coolant, rust inhibitor, defoamer, and derusting agent.
- 4. A method according to claim 1 wherein the mixture of step a) comprises about 0.5 to about 3.0% reducing sugar.
- 5. A method according to claim 1 wherein the mixture of step a) comprises about 2% reducing sugar.
- 6. A method according to claim 1 comprising the further step of monitoring the concentration of cleaning agent over time by repeating steps a) through e) at time intervals.
- 7. A method according to claim 1 wherein the wash liquor containing the cleaning agent has a pH of about 6.0 to about 8.5.
CROSS-REFERENCE TO RELATED APPLICATIONS
This is a continuation-in-part application of U.S. patent application Ser. No. 09/436,619, filed Nov. 9, 1999, now U.S. Pat. No. 6,361,960, issued Mar. 26, 2002.
US Referenced Citations (8)
Number |
Name |
Date |
Kind |
3958560 |
March |
May 1976 |
A |
4867193 |
Hayashi et al. |
Sep 1989 |
A |
5267152 |
Yang et al. |
Nov 1993 |
A |
5459317 |
Small et al. |
Oct 1995 |
A |
5498546 |
Kuhlmann et al. |
Mar 1996 |
A |
5676143 |
Simonsen et al. |
Oct 1997 |
A |
6061582 |
Small et al. |
May 2000 |
A |
6361960 |
Pliszka et al. |
Mar 2002 |
B1 |
Non-Patent Literature Citations (7)
Entry |
Website printout of www.diabetesnet.com/diabetes_technology/noninvasive_monitoring.html; p 1, 2001. |
Website printout of www.futrex.com/dbdesc.html, pp 1-5, 1997. |
Website printout of diabetes.about.com/library/weekly/aa121100a.htm, pp 1-2; Dec. 11, 2000. |
Website printout of www.sugartrac.com/sugartrac system overview.htm.; pp 1-2, undated. |
Website printout of www.animascorp.com/products/pr_glucosesensor.shtml, pp 1-3, 2001. |
Website printout of www.diabetes.com/diabetes technology/noninvasive monitoring optiscan.html, pp. 1-2, 2001. |
Website printout of www.ohiou.edu/researchnews/SCIENCE/diabetic_light.htm; pp 1-2, Jul. 24, 2000. |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
09/436619 |
Nov 1999 |
US |
Child |
10/104225 |
|
US |