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Low-Cost Constant Temperature Heating Block

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Charles G. Shevlin , Ward Coppersmith , Christopher Fish , Stanley Vlock and William Vellema

The Scripps Research Institute, 10550 N. Torrey Pines Rd, CVN-18, La Jolla, CA 92037

J. Chem. Educ., 1997, 74 (8), p 958

DOI: 10.1021/ed074p958

Publication Date (Web): August 1, 1997

Section:

History, Education, and Documentation

Abstract

A simple constant temperature heat block was constructed from readily available materials. The configuration of the heating block can be constructed to meet the needs of any laboratory. Some highlights of this temperature controller include the elimination of dangerous flames and cumbersome water baths, maintenance of temperature over a wide range within 1 °C and compact electronics. In addition, the IC power supply circuit is self-contained thus eliminating the need for bulky transformers and additional power related circuitry. Secondary school and undergraduate laboratories can build many units for the cost of a commercially comparable one while simultaneously putting to practice several electronic principles taught in most instrumental analysis courses.

Keywords (Audience):

High School / Introductory Chemistry

Keywords (Domain):

Organic Chemistry

Keywords (Feature):

Cost-Effective Teacher

Keywords (Subject):

Instrumental Methods

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Received: August 03, 2009

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Low-Cost Constant Temperature Heating Block