incubator Flashcards
provides a
temperature-controlled environment to
support the growth of microbiological
cultures.
laboratory incubator
provides a
temperature-controlled environment to
support the growth of microbiological
cultures.
laboratory incubator
Typical incubators are insulated
boxes with an adjustable heater, going up
to __________, though
some can go slightly higher (generally to
no more than 100°C).
60°C to 65°C (140°F to 149°F)
The operation of a lab incubator is based on the________ , in which a thermostat maintains a stable temperature
by generating a thermal gradient.
thermoelectric
principle
Under thermal gradient
conditions, any conductor produces a voltage, which is known
as the .
thermoelectric effect
In most clinical laboratories, the usual temperature to be
maintained is ______ for bacteria.
35–37°C
This is the frame of the whole incubator.
Cabinet
The two walls are filled with __________ to ensure better temperature control
glass
wool
are usually made of transparent glass
with an insulating layer, which makes it
easy to observe the status inside the
incubator.
Door
The door is also fitted with an
__________ to prevent the entry of
outside air.
asbestos door gasket
Monitor the temperature, humidity and other
parameters inside the incubator, with all the
switches and control keys.
Control Panel
-are affixed to the incubator’s inner
wall and function as the platform upon which
culture media plates are placed.
-allow for controlled air movement within the
cabinet.
Perforated Shelves
-is used to set the desired
temperature of the incubator.
-Once the desired
temperature is reached, it
automatically maintains the lab incubator until the
temperature changes again.
Thermostat
-provides an almost airtight
seal between the door and the cabinet
-This seal
prevents outside air from infiltrating the cabinet,
thus maintaining a stable internal environment.
Asbestos Door Gasket
-placed on the incubator’s top
exterior wall to read temperature levels
accurately.
-One end with a mercury bulb
extends slightly into the chamber, while the
other end displays the readings outside the
device for easy monitoring.
L-Shaped Thermometer
-Some incubators, especially CO2 types, come
with a reservoir beneath the chamber for
water storage.
-The water is vaporized to
maintain relative humidity inside the
chamber.
-gas chambers to control the level of
CO2.
Humidity and Gas Control
-Some incubators, especially CO2 types, come
with a reservoir beneath the chamber for
water storage.
-The water is vaporized to
maintain relative humidity inside the
chamber.
-gas chambers to control the level of
CO2.
Humidity and Gas Control
has a built-in
refrigeration system that keeps things
cool, even when it’s hot outside.
Cooled /Refrigerated incubator
They combine shaking and
incubation in one machine, giving cells
a good mix of oxygen and nutrients for
optimal growth.
Shaking incubator
enable
microbiological testing in remote
locations and in settings with
limited resources
Portable incubator
enable
microbiological testing in remote
locations and in settings with
limited resources
Portable incubator
The
majority of these incubators
contain alarms, a glass door, and a
display screen with the
temperature and the time.
Benchtop incubator
-are used to produce
biological cell cultures.
-They must
preserve the same conditions as
those found inside the human
body i.e. 98.6°F (37°C), > 90%
relative humidity & neutral pH 7.4.
CO2 incubator
-are used to produce
biological cell cultures.
-They must
preserve the same conditions as
those found inside the human
body i.e. 98.6°F (37°C), > 90%
relative humidity & neutral pH 7.4.
CO2 incubator
