US PATENT SUBCLASS 435 / 39
.~.~.~ Quantitative determination

Current as of: June, 1999
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435 /   HD   CHEMISTRY: MOLECULAR BIOLOGY AND MICROBIOLOGY

4  DF  MEASURING OR TESTING PROCESS INVOLVING ENZYMES OR MICRO-ORGANISMS; COMPOSITION OR TEST STRIP THEREFORE; PROCESSES OF FORMING SUCH COMPOSITION OR TEST STRIP {15}
29  DF  .~ Involving viable micro-organism {4}
34  DF  .~.~ Determining presence or kind of micro-organism; use of selective media {5}
39.~.~.~ Quantitative determination {1}
40  DF  .~.~.~.~> Using multifield media

DEFINITION

Classification: 435/39

Quantitative determination:

(under subclass 34) Subject matter where the number or concentration of living microorganisms in the material is found.

(1) Note. The identity of the microorganism is not necessarily known.

(2) Note. Included herein are tests for the purity of water.

SEE OR SEARCH CLASS

359, Optics: Systems (Including Communication) and Elements, for the use of an optical element such as a lens of a microscope for magnification for counting particles such as bacteria colonies one by one.