US PATENT SUBCLASS 436 / 176
.~ Stabilizing or preserving

Current as of: June, 1999
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436 /   HD   CHEMISTRY: ANALYTICAL AND IMMUNOLOGICAL TESTING

174  DF  INCLUDING SAMPLE PREPARATION {6}
176.~ Stabilizing or preserving

DEFINITION

Classification: 436/176

Stabilizing or preserving:

(under subclass 174) Subject matter wherein the material to be analyzed is stabilized or preserved prior to analysis.

(1) Note. This subclass includes methods for prevention of changes in a sample during its transportation and storage.

(2) Note. Stability Tests are generally classified on the basis of the species tested for.

SEE OR SEARCH CLASS

252, Compositions,

380, for preservative compositions especially subclass 397 for a chemical change inhibitor.

422, Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing,

1+, for a process of preserving not claimed in combination with chemical analysis.