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PREVENTING CONTAMINATION
To prevent contamination of the chamber, select a suitable installation site.
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Avoid locations with high temperatures or humidity.
Avoid locations with high temperatures or humidity, because of a greater presence of microorganisms in
the air.
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Avoid locations with passers-by or drafts.
Avoid locations near doors, air conditioners, fans, etc., where passers-by or drafts can facilitate the entry
of microorganisms into the chamber.
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If possible, use a cleanroom.
To achieve a better culture, it is recommended that a cleanroom be used if one is available.
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Use clean containers.
The greatest cause of contamination is dirty containers for cultures. Be careful not to get containers or
trays dirty when taking them in and out.
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Keep the chamber clean.
Wipe off any fingerprints. If water spills from the humidifying pan, or if the doors are left open for a long
time, condensation may form on the inside of the doors. If that occurs, wipe off the condensation with a
dry sterile gauze. In particular, clean and disinfect the chamber if the culture medium is spilled. For details,
refer to Routine Maintenance on page 45.
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Use sterile distilled water in the humidifying pan.
Always use sterile distilled water in the humidifying pan. Do not use ultrapure water, because it may
contain red rust-like suspended particles.
A water level alarm is displayed in the status display area on the control panel. Quickly refill the water in
the pan when the water level alarm is displayed. Adding low-temperature water will significantly lower the
temperature in the chamber. Clean the humidifying pan once a month.
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Keep the Incubator out of direct airflows from air conditioners or fans.
Cool airflow from an air conditioner may cause condensation and lead to possible contamination.