Device for measuring the number of bacteria in superpure water

Details Device for measuring the number of bacteria in superpure water Device for measuring the number of bacteria in superpure water

1986-02-14

1987-10-06

Jones, Larry

Chemistry: molecular biology and microbiology

Apparatus

Bioreactor

435287, 435808, 250361R, 250364, C12M 134

Patent

active

046983082

ABSTRACT:
A device for continuously and accurately measuring the number of bacteria present in superpure water such as may be used in the manufacture of semiconductor devices and the like. A sample flow of the superpure water is passed through a generally rectangular measuring flow path having a small thickness and large width. A reagent is added to the flow in the measuring flow path of a type which reacts with bacteria to produce products which fluoresce upon application of an exciting light beam. The light produced by such fluorescence is detected and the detection output converted to a signal indicative of the number of bacteria present in the sample flow.

REFERENCES:
patent: 3912929 (1975-10-01), Cobb et al.
patent: 3916197 (1975-10-01), Fulwyler
patent: 4283490 (1981-08-01), Plakas
patent: 4467032 (1984-08-01), Lowke et al.
patent: 4563331 (1986-01-01), Losee et al.
patent: 4603256 (1986-07-01), Lelong

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