LEEC Plant Growth / Germination Cabinets are based on LEEC 'Precision Cooled' and LEEC 'Large LT' ranges of cooled incubators. Day and night conditions are automatically simulated and can be easily programmed. Temperature Control All plant growth cabinets use the same temperature control system as the cooled incubators on which they are based. Temperature performance can be marginally affected during the lights ON cycle due to the small amount of heat that escapes from the lights into the chamber. The temperature is cycled using a digital 24 hour timer (standard). Illumination All models are fitted with a digital 24 hour timer to control the day / night cycle of lights on and off. Each incubator door is fitted with one pair of white fluorescent tubes. These give a lighting intensity of approximately 3000 lux on each shelf. For higher lighting intensities and specialised applications, extra lights or UV lamps can be added. All lights are mounted in the outer door which is vented at the top and bottom. This means that the unwanted heat can escape into the laboratory. Cabinets fitted with four or more lights in each door also have a small extract fan in the door to help remove heat. This helps to maintain stable control, especially at lower operating temperatures.