Esco Isotherm IFC-110-8, Руководство пользователя

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Low Temperature BOD Incubator
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1.1 About Isotherm Low Temperature BOD Incubator
Forced Convection
Convection is a method to transfer of heat energy that involves the movement of a fluid (gas or liquid). Fluid in
contact with the source of heat expands and tends to rise within the bulk of the fluid. Cooler fluid sinks to take
its place, setting up convection current. However, in a forced convection device, the fluid motion is generated
by an external source (like a pump, fan, suction device, etc.).
Forced Convection Laboratory Incubator
Laboratory Incubator is a device for controlling temperature and other condition in which a microbiological
culture is being grown. Typical incubator are insulated boxes with an adjustable heater, going up to 60˚C to
65˚C (140˚F to 150˚F), though some can go slightly higher (generally to no more than 100˚C
Incubator can vary in size from tabletop to units the size of small rooms. As for temperature, most commonly
used is approximately 36˚C to 37˚C. Most bacteria, especially the frequently used E. Coli, grow well under such
condition. For experimental organism, such as the budding yeast Saccharomyces cerevisiae, a growth
temperature of 30˚C is optimal.
Biochemical oxygen demand (BOD)
When organic matter decomposes, it is fed upon by aerobic bacteria. In this process, organic matter is broken
down and oxidized (combined with oxygen). Biochemical oxygen demand is a measure of the quantity of
oxygen used by these microorganisms in the aerobic oxidation of organic matter.
The BOD level is determined by subtracting this DO level from the DO level found in the original sample taken
five days previously:
BOD=mg/LDO(original sample)-mg/LDO(after incubation )
1.2 Labels
Model : The model of the unit
Serial : The serial number of the unit.
Power : The maximum power consumption and
the electrical requirement of the unit.
Manufacture in : The time of manufacture.