Normal view
MARC view
- Indicators and Reagents
Entry Topical Term
001 - CONTROL NUMBER
- control field: 200280
003 - CONTROL NUMBER IDENTIFIER
- control field: DNLM
005 - DATE AND TIME OF LATEST TRANSACTION
- control field: 20210314195623.0
008 - FIXED-LENGTH DATA ELEMENTS
- fixed length control field: 990101 n ancnnbabn || ana
040 ## - CATALOGING SOURCE
- Original cataloging agency: DNLM
- Transcribing agency: DNLM
072 ## - SUBJECT CATEGORY CODE
- Subject category code: D27.
- Subject category code subdivision: 720.
- Subject category code subdivision: 470.
- Subject category code subdivision: 410
150 ## - HEADING--TOPICAL TERM
- Topical term or geographic name entry element: Indicators and Reagents
450 ## - SEE FROM TRACING--TOPICAL TERM
- Control subfield: nnna
- Topical term or geographic name entry element: Indicators
450 ## - SEE FROM TRACING--TOPICAL TERM
- Control subfield: nnna
- Topical term or geographic name entry element: Reagents and Indicators
450 ## - SEE FROM TRACING--TOPICAL TERM
- Topical term or geographic name entry element: Indicator
450 ## - SEE FROM TRACING--TOPICAL TERM
- Topical term or geographic name entry element: Reagent
450 ## - SEE FROM TRACING--TOPICAL TERM
- Topical term or geographic name entry element: Reagents
550 ## - SEE ALSO FROM TRACING--TOPICAL TERM
- Topical term or geographic name entry element: Sulfanilic Acids
680 ## - PUBLIC GENERAL NOTE
- Explanatory text: Substances used for the detection, identification, analysis, etc. of chemical, biological, or pathologic processes or conditions. Indicators are substances that change in physical appearance, e.g., color, at or approaching the endpoint of a chemical titration, e.g., on the passage between acidity and alkalinity. Reagents are substances used for the detection or determination of another substance by chemical or microscopical means, especially analysis. Types of reagents are precipitants, solvents, oxidizers, reducers, fluxes, and colorimetric reagents. (From Grant & Hackh's Chemical Dictionary, 5th ed, p301, p499)