(under subclass 164) Subject matter wherein the material to be analyzed is reacted with a reagent contained in absorbent or bibulous carrier or substrate.
(1) Note. Included herein are a dip-stick, test paper, wick, etc.
(2) Note. This subclass is not intended to be a catch-all for test substrates. Cross-referencing is not mandatory in this subclass when claims are classifiable in subclasses 1 to 146 and merely perform the test on an impregnated substance.
SEE OR SEARCH THIS CLASS, SUBCLASS:
166, for processes of optical detection including reagent preparation.
SEE OR SEARCH CLASS
422, Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing,
