US PATENT SUBCLASS 436 / 19
.~ Inorganic standards or controls

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

8  DF  COMPOSITION FOR STANDARDIZATION, CALIBRATION, SIMULATION, STABILIZATION, PREPARATION OR PRESERVATION; PROCESSES OF USE IN PREPARATION FOR CHEMICAL TESTING {11}
19.~ Inorganic standards or controls

DEFINITION

Classification: 436/19

Inorganic standards or controls:

(under subclass 8) Compositions or processes which simulate the chemical effect of an inorganic substance to standardize, or calibrate a chemical procedure.

SEE OR SEARCH THIS CLASS, SUBCLASS:

73+, for processes of chemical analysis of metals.

100+, for processes of chemical analysis of inorganic acids, or bases.

182, for processes of chemical analysis of inorganic compounds.