Method and apparatus for assaying wood pulp fibers

Patent · Tue May 26 00:00:00 EDT 2009

OSTI ID:988042

Gustafson, Richard ^[1]; Callis, James B ^[2]; Mathews, Jeffrey D ^[3]; Robinson, John ^[4]; Bruckner, Carsten A ^[5]; Suvamakich, Kuntinee ^[2]

---

1. Bellevue, WA
2. Seattle, WA
3. Neenah, WI
4. Issaquah, WA
5. San Mateo, CA

Paper pulp is added to a stain solution. The stain solution and pulp fibers are mixed to form a slurry. Samples are removed from the slurry and are admixed with dilution water and a bleach. Then, the fibers are moved into a flow cell where they are subjected to a light source adapted to stimulate fluorescence from the stained pulp fiber. Before the fiber slurry enters the flow cell it is mixed with a dilution water of bleach to reduce background fluorescence. The fluorescent light is collimated and directed through a dichroic filter onto a fluorescence splitting dichroic filter.

• Research Organization: University of Washington (Seattle, WA)
• Sponsoring Organization: USDOE
• DOE Contract Number: FC07-97ID13539
• Assignee: University of Washington (Seattle, WA)
• Patent Number(s): 7,537,732
• Application Number: 10/788,548
• OSTI ID: 988042
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE