Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing liquid or solid sample
Patent
1981-12-04
1985-08-13
Bernstein, Hiram H.
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Means for analyzing liquid or solid sample
422109, G01N 3108
Patent
active
045349410
ABSTRACT:
A temperature control system used to precisely and accurately control the temperature of a fluid stream in an analytical system designed for investigation of the chemical constituents of the fluid stream. One example of use is in chromatography such as for the chromatographic column in an amino acid analyzer system. The temperature control system utilizes a set of thermoelectric modules to transfer heat between a thermoconductive block which holds the chromatographic column and an air exchange heat sink which obtains heat from or disposes heat into ambient air as required. The control system regulates the temperature at a very rapid rate in order to minimize the recycle time of the instrument.
REFERENCES:
patent: 3431077 (1969-03-01), Danforth
patent: 3592046 (1971-07-01), Cramers et al.
patent: 3806321 (1974-04-01), Durrum et al.
patent: 4044593 (1977-08-01), Haruki et al.
patent: 4057998 (1977-11-01), Moreaux
patent: 4088458 (1978-05-01), Jourdan
Hackh's Chemical Dictionary, p. 673, 4th Ed., McGraw Hill, N.Y., 1969.
LKB4400--The Benefits, Durrum Amino Acid Analyzer, Model D-500.
Biotronik Amino Acid Analyser LC 7000, Chromaspek Instrument by Rank-Hilger.
Ehret Robert J.
Stephens Donald E.
Beckman Instruments Inc.
Bernstein Hiram H.
Harder P. R.
May W. H.
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