G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
G01N33/52—Use of compounds or compositions for colorimetric, spectrophotometric or fluorometric investigation, e.g. use of reagent paper and including single- and multilayer analytical elements
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Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
ZA261A1975-01-281976-01-16Test device and method for its preparation and useZA76261B (en)