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  • Title: A forced-air ventilation system for rodent cages.
    Author: Wu DY, Joiner GN, McFarland AR.
    Journal: Lab Anim Sci; 1985 Oct; 35(5):499-504. PubMed ID: 4057945.
    Abstract:
    A novel forced-air ventilation system for rodent cages was developed. The apparatus was operated at an air flow rate of 56 L/min when used with a 230 mm wide X 450 mm long X 165 mm deep cage. Air velocity measurements in the cage did not exceed 8 m/min at animal (rat) height. The average NH3 concentration in a cage which housed two 250 g rats was less than 0.3 ppm at the end of the third day, whereas the concentration measured in a cage without the forced-air ventilation system was 150 ppm after 3 days. Tests of the water content of soiled bedding showed the forced-air ventilation system to provide a much drier environment for the rodents.
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