Chemistry: molecular biology and microbiology – Measuring or testing process involving enzymes or... – Involving viable micro-organism
Patent
1990-03-14
1991-09-17
Lacey, David L.
Chemistry: molecular biology and microbiology
Measuring or testing process involving enzymes or...
Involving viable micro-organism
7386385, 7386386, 7386341, 7386322, 422 99, 422101, 435291, 435292, 435293, G01N 116, G01N 118, G01N 120
Patent
active
050494929
ABSTRACT:
An apparatus and method for biofilm monitoring of a water distribution system which includes the mounting of at least one fitting 61 in a wall port 65 of a manifold 19 in the water distribution system with a passage 62 through the fitting in communication with the manifold flow stream and the insertion of a biofilm sampling member 77 through the fitting with planar sampling surfaces 91,92 of different surface treatment provided on linearly arrayed sample couplons of the sampling member disposed in the flow stream in edge-on parallel relation to the direction of the flow stream of the manifold under fluid-tight sealed conditions. The sampling member 77 is adapted to be aseptically removed from or inserted in the fitting and manifold under a positive pressure condition and the fitting passage 62 sealed immediately thereafter by appropriate closure device 60 so as to preclude contamination of the water distribution system through the fitting 61. The apparatus includes suitable structure 70 for clamping the sampling member 77 and for establishing electrical continuity between the sampling surfaces 91,92 and the system for minimizing electropotential effects. The apparatus may also include a plurality of fittings 61 and sampling members 77 mounted on the manifold 19 to permit extraction of the sampling members in a timed sequence throughout the monitoring period.
REFERENCES:
patent: 4631961 (1986-12-01), Yohe et al.
"Biological Fouling of Industrial Water Systems: A Problem Solving Approach," Marc W. Mittelman and Gill G. Geesey, Water Micro Associates, San Diego, Calif., 1987.
Flanagan David T.
Sauer Richard L.
Adams Harold W.
Fein Edward K.
Lacey David L.
Redding David
Schlorff Russell E.
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