Cleanroom is a specially designed room which has controlled numbers of viable & non viable particles.Clean rooms are used in pharmaceutical industries to protect the products & to prevent contamination or cross contamination.Cleanrooms are also used in electronics manufacturing industries.Cleanrooms have defined number of air changes per hour.Cleanrooms have controlled level of noise or vibrations & light intensity.Differential pressure in cleanrooms is also maintained according to the defined limits.Temperature & humidity is also under control in cleanrooms.