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A Simple, Inexpensive Watre Bath for Precise Temperature Control
Author(s) -
Spomer Louis A.
Publication year - 1972
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1972.00021962006400060041x
Subject(s) - mercury (programming language) , simple (philosophy) , temperature control , toluene , chemistry , materials science , thermodynamics , analytical chemistry (journal) , environmental science , chromatography , physics , computer science , organic chemistry , programming language , philosophy , epistemology
A simple, inexpensive water bath for precise laboratory temperature control is described. The bath was constructed from common materials at an actual cost of less than $35. Bath temperature is maintained slightly above ambient by a large volume mercury‐toluene thermoregulator and mechanical heat proportioner. This apparatus has maintained 20 C with maximum short fluctuations of ± 5 × 10 −4 C and drift of + 2 × 10 −3 C day −1 for continuous periods up to 25 days.