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USE AND CARE OF Laboratory Waterbath
Course: Biomedical Laboratory Instrumentation (PMT 412)
20 Documents
Students shared 20 documents in this course
University: Maseno University
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LABORATORY INSTRUMENTATION LABORATORY WATERBATH
WATER BATH
The water bath is an instrument used in the laboratory for carrying out serological,
agglutination, inactivation, bio- medical, and pharmaceutical tests and even for
industrial incubation procedures. In general they use water, but some baths use oil.
The temperature range at which water baths are normally used range between
room temperature and 60 °C. Temperatures of 100 °C can be selected, using a
cover with special characteristics. Water baths are manufactured with chambers of
a capacity ranging from 2 to 30 litres.
Immersion type These resistors are installed inside a sealed tube and located
on the lower part of the container in direct contact with heating medium.
External. These resistors are located on the lower part but on the outside of
the tank. These are protected by an isolating material which prevents heat loss. This
type of resistor transfers the heat to the bottom of the tank through thermal
conduction.
Working Principle of a Laboratory Hot Water Bath
Laboratory water bath has a temperature sensor, which transfers water
temperature to resistance value, and amplified and compared by an integrated
amplifier. Then output the control signal, and efficiently control the average heating
power of the electric heating tube and maintain water in constant temperature.
Components of a Laboratory Hot Water Bath
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