Química Nova | |
Um banho termostático de baixo custo (temperatura ambiente até 0ºC) | |
Cristina M. Quintella1  Cristiane C. Gonçalves1  Ângelo M. V. Lima1  Alexandre K. Guimarães1  José C. Dos Santos1  Iuri M. Pepe2  | |
[1] ,Universidade Federal da Bahia Instituto de Química Salvador BA | |
关键词: thermostatization; instrumentation for chemistry laboratories; thermal bath; | |
DOI : 10.1590/S0100-40422003000100021 | |
来源: SciELO | |
【 摘 要 】
Thermal baths to decrease ambient temperature are an indispensable tool for most research and teaching laboratories, especially those in tropical or equatorial regions. A simple and inexpensive thermal bath has been developed based on a scratched compressor. It has three possible setups for cooling: sample immersed into the bath, sample flowing through the bath, and cooling liquid flowing in a jacket around the sample. It has been tested for 40 months. The temperature ranges from room temperature to 0 °C, when using water. The repeatability is better than 3% and the precision varies from 0.5% to 2%.
【 授权许可】
CC BY-NC
All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License
【 预 览 】
Files | Size | Format | View |
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RO202103040061179ZK.pdf | 201KB | download |