Paper making and fiber liberation – Apparatus – Apparatus repair – cleaning or conditioning
Patent
1993-08-02
1995-05-09
Jones, W. Gary
Paper making and fiber liberation
Apparatus
Apparatus repair, cleaning or conditioning
162199, D21F 132
Patent
active
054136806
ABSTRACT:
A method of detecting microbiological fouling of felts used in paper making machines is described. A felt suspected of containing microbiological deposits is contacted with iodonitrotetrazolium and then examined for a predetermined color change confirming the presence of bacteria on the felt. The felt assumes a red color in the presence of at least one million colony forming units of bacteria per gram of dry felt within thirty minutes after the iodonitrotetrazolium has contacted the felt.
REFERENCES:
patent: 4102707 (1978-07-01), Lange
Drake James J.
Jones W. Gary
Miller Robert A.
Nalco Chemical Company
Nguyen Dean T.
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