Artificial testing soil and method of testing

• US 7,001,773 B2
• Filed: 06/14/2002
• Issued: 02/21/2006
• Est. Priority Date: 06/15/2001
• Status: Active Grant

• Current Assignee: SC Johnson & Son Incorporated
• Original Assignee: SC Johnson & Son Incorporated
• Inventors: Gipp, Mark M., Wietfeldt, John R., Padden, Timothy J., Lepow, Jacqueline V., Singsank, Craig A.
• Primary Examiner(s): WALLENHORST, MAUREEN
• Application Number:
  US10/172,637
• Publication Number:
  US 20030008402A1
• Time in Patent Office: 1,348 Days
• Field of Search: 436/8, 436/19, 436/183, 436/164, 252/408.1, 134/6, 134/7, 134/42
• US Class Current: 436/8
• CPC Class Codes: B08B 13/00 Accessories or details of general applicability for machines or apparatus for cleaning
• CPC Class Codes: C05G 1/00 Mixtures of fertilisers belonging individually to different subclasses of C05
• CPC Class Codes: G01N 31/222 for investigating moisture content
• CPC Class Codes: Y10T 436/10 Composition for standardization, calibration, simulation, stabilization, preparation or preservation; processes of use in preparation for chemical testing

Abstract

An artificial test soil is composed of particulate, hair, and fiber components, wherein the particulate component consists of mineral, food, and plant materials, so chosen and proportioned as to correlate to a typical soil found in the home. The test soil may be used to test cleaning products by application of a known amount thereof to a surface, cleaning the surface, and determination of the amount of soil removed from the surface.

Claims

1. A method for testing a cleaning product, said method comprising applying to a hard surface from 0.1 to 10 grams of a test soil, per square meter;

said test soil comprising from about 40% to 80% of at least one particulate component, from about 20% to 60% of at least one hair component, and up to about 40% of an additional fiber component, wherein the particulate component has a particle size distribution of from 1% to 10% less than 75 microns, from 10% to 30% between 75 microns and 300 microns, and from 60% to 85% greater than 300 microns;

first, randomly but evenly, distributing the particulate component of said test soil to the surface;

second, randomly but evenly, distributing the hair and fiber components of said test soil to the surface by separating fibers from each other into at least ten divisions of fibers and distributing these divisions of fibers to the surface;

applying the cleaning product to the test surface to remove the test soil; and

measuring the amount of test soil that has been removed by the cleaning product from the surface to obtain the relative efficiency of the cleaning product.

2. The method of claim 1, wherein said additional fiber component comprises an amount of from about 10% to 30%.

3. The method of claim 1, wherein said particulate component comprises from 40% to 70% of said soil, and comprises at least two materials selected from the group consisting of mineral, food, and plant materials.

4. The method of claim 3, wherein said particulate component comprises from 10% to 40% minerals selected from the group consisting of sand, feldspar, talc, and clay, 20% to 50% food selected from the group consisting of chips, crackers, cereals, and dried soup mixes, and 5% to 40% plant material selected from the group consisting of dried grasses and dried leaves.

5. The method of claim 1, wherein said hair component comprises from about 20% to about 40% of said soil, and further comprises hairs selected from the group consisting of human hair, cat hair, and dog hair.

6. The method of claim 1, wherein said fiber is selected from the group consisting of cotton, nylon, polyester, wool, rayon, and acrylic fibers, and mixtures thereof.

7. The method of claim 1, wherein said particulate component comprises from about 40% to 80%, said hair component comprises from about 20% to 40%, and said fiber component comprises from about 10% to 30%.

8. The method of claim 1, wherein said particulate component comprises one or more minerals selected from the group consisting of sand, feldspar, talc, and clay, one or more food materials selected from the group consisting of chips, crackers, cereals, and dried soup mixes, and one or more plant materials selected from the group consisting of dried grass and dried leaves, said hair component comprises one or more types of hair selected from the group consisting of human hair, cat hair, and dog hair, and said fiber component comprises one or more fibers selected from the group consisting of cotton, nylon, polyester, wool, rayon, and acrylic fibers.

9. The method of claim 1, further comprising one or more optional components selected from the group consisting of pollen, human skin cells, and sebum.