EP 0773298 A1 19970514 - Monitoring the level of microbiological activity of a fluid system
Title (en)
Monitoring the level of microbiological activity of a fluid system
Title (de)
Überwachung der mikrobiologischen Aktivität in einem Flüssigkeitssystem
Title (fr)
Surveillance de taux d'activité dans un système de fluide
Publication
Application
Priority
US 55616095 A 19951109
Abstract (en)
The present invention is a method for monitoring the level of microbiological activity of a fluid system which comprises the following steps. (Step a) Adding to the system a known amount of at least one bioreactive reagent of from about 10 ppb to about 100 ppm. The bioreactive reagent is added at a level to provide a system having a concentration of the bioreactive reagent at or greater than minimum detection concentration for such a bioreactive reagent in the system. (Step b) The concentration of the bioreactive reagent is continuously measured by any known means. (Step c) The concentration of bioreactive reagent present as measured in (Step b) is subtracted from the concentration of bioreactive reagent added in (Step a). The difference is used to calculate the level of consumption of the bioreactive reagent. (Step d) The level of microbiological activity in the fluid system is calculated using the level of consumption of the bioreactive reagent. <IMAGE>
IPC 1-7
IPC 8 full level
C23F 11/14 (2006.01); G01N 33/18 (2006.01)
CPC (source: EP)
C23F 11/149 (2013.01)
Citation (applicant)
- US 23694594 A 19940502
- US 4783314 A 19881108 - HOOTS JOHN E [US], et al
- US 4966711 A 19901030 - HOOTS JOHN E [US], et al
- US 5041386 A 19910820 - PIERCE CLAUDIA C [US], et al
- US 4992380 A 19910212 - MORIARTY BARBARA E [US], et al
- US 5006311 A 19910409 - HOOTS JOHN E [US], et al
- US 5132096 A 19920721 - HOOTS JOHN E [US], et al
- JP S553668 A 19800111 - MITSUBISHI ELECTRIC CORP
- US 5252602 A 19931012 - ALAM RAFEUL [US], et al
- EP 0466303 A2 19920115 - WALLACE & TIERNAN INC [US]
- "Nalco Water Handbook, 2nd ed., Chapter 34", 1988
Citation (search report)
- [XY] EP 0600411 A1 19940608 - NALCO CHEMICAL CO [US]
- [X] EP 0680694 A2 19951108 - NALCO CHEMICAL CO [US]
- [Y] EP 0504520 A2 19920923 - NALCO CHEMICAL CO [US]
- [AP] US 5503775 A 19960402 - RAO NARASIMHA M [US], et al
- [A] US 4108790 A 19780822 - FOROULIS ZISIS ANDREW
- [A] EP 0675358 A1 19951004 - NALCO CHEMICAL CO [US]
- [AP] WO 9533069 A1 19951207 - INNOVATIVE TECH CENTER [US]
Designated contracting state (EPC)
DE ES FI FR GB IT SE
DOCDB simple family (publication)
EP 0773298 A1 19970514; EP 0773298 B1 20000126; CA 2189948 A1 19970510; DE 69606378 D1 20000302; DE 69606378 T2 20000706; ES 2143722 T3 20000516
DOCDB simple family (application)
EP 96308002 A 19961105; CA 2189948 A 19961108; DE 69606378 T 19961105; ES 96308002 T 19961105