Um banho termostático de baixo custo (temperatura ambiente até 0ºC)

Química Nova

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