Microbial contamination test device

Details Microbial contamination test device Microbial contamination test device

1994-03-14

1995-10-03

Russel, Jeffrey E.

Chemistry: molecular biology and microbiology

Apparatus

Including measuring or testing

435 34, 435 39, 435296, 435808, 4352871, C12M 124, C12M 134, C12Q 104, C12Q 106

Patent

active

054551765

ABSTRACT:
A test device for evaluating microbial contamination of a liquid comprises a hollow container unit defining a first compartment for containing a nutrient for growing microorganisms and a second compartment for containing a contamination indicating coloring agent. The first compartment is filled with the liquid to be tested, which liquid mixes with the nutrient to grow the microorganisms during a predetermined period of time. During growth of the microorganisms, a sealing mechanism isolates the first and second compartments from each other. After the predetermined period of time has elapsed, the sealing mechanism is operated to establish communication between the first and second compartments to thereby mix the coloring agent from the second compartment with the liquid from the first compartment. In the presence of microorganisms, the coloring agent colors the liquid to indicate contamination thereof.

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