OvaEasy HATCHER Advance Series 2_V01_GB_NL
8
7 Humidity, Ventilation and Hatching.
7.1
Once the Hatcher has reached operating temperature the relative humidity level will gradually increase
and stabilise. The generally accepted humidity level for hatching most species is 60%RH or higher.
Avoid excessive humidity over 70% as this will condense as water on surfaces and may drip on the
eggs. It also increases the time needed for chicks to dry. Open the vent to decrease the humidity level.
7.2
Two main factors affect incubation humidity: water evaporation within the cabinet (from the water pan
and eggs) and levels of ventilation. The water content of the air being drawn through the Hatcher will
also have an effect.
7.3
The humidity level can be controlled manually using the ventilation slider. Avoid opening the door as it
will take some time for the humidity level to stabilise again.
7.4
Because of the short duration involved water/weight loss will not be significantly affected. High
humidity is necessary to prevent membranes drying and hardening before the hatch fully emerges.
Humidity will naturally increase as the first eggs begin to hatch and internal membranes begin to dry.
This effect is in addition to the water evaporation from the evaporation pan.
7.5
The Brinsea Advance Humidity Pump is available as an option on the Ova-Easy Advance incubators.
The incubator digital control system not only reads the humidity in the incubator but it provides a
control signal to operate the water pump and accurately maintain the humidity level at the desired
level automatically. Visit www.brinsea.co.uk for more information.
Advance Humidity Pump.
INCREASE VENTILATION
REDUCE VENTILATION