3898 (RP-730) -- Development of Ventilation Rates and Design Information for Laboratory Animal Facilities-Part I: Field Study PDF

Describes a survey of 46 laboratory animal rooms (33 rat rooms, 8 mouse rooms, 2 rabbit rooms, 2 primate rooms and 1 dog room) at three commercial sites, 5 universities and 1 research organisation. Air exchange rates, air velocities, temperature, humidities, ammonia concentrations, noise levels and light levels were measured throughout the room and within selected cages in the room. Finds cage type was the most important factor that influenced cage conditions and uniformity in cage conditions. Room air exchange rate had little influence on cage conditions. Velocity approaching the cage, number of returns and diffusers and diffuser type did not significantly influence cage conditions and uniformity in cage conditions.

KEYWORDS: year 1995, Laboratory animal housing, research, ventilation, air change rate, microclimate