This area controls environment sanitization and barrier system: sterilization of materials (foods, water, beddings of wood shavings, clothes, chemical sterilization of boots), environment parameters (air quality: filtration, exchange rate, pressure, relative humidity, temperature).

A routine of microbiological tests are done to monitoring autoclave operation, environment sanitization, and sterilization of isolators, food, water, wood, shavings, cages, clothes and air filtration.

Physical, chemical and microbiological tests are performing to certify the environment sanitization, material sterilization and autoclave performance.