Ningbo Experimental Animal Cleanroom

Ningbo Experimental Animal CleanroomIn addition to the cleanliness level of the air, the temperature and humidity, pressure gradient, ammonia concentration, and airflow velocity of the air all have a significant impact on the thermal balance of experimental animals. Some experimental animals, such as mice, guinea pigs, rabbits, etc., are also sensitive to sound. If the noise is too high, it can affect the feeding of the animals and thus affect the experimental results. In addition, some experimental animals (such as SPF mouse infection laboratories) should use a brand new air direct current system, and the exhaust should be concentrated through a high-efficiency filter (HEPA) before being discharged into the atmosphere.

Ningbo Experimental Animal CleanroomThe airflow direction in the area is different from that of ordinary clean air conditioning. It has two corridors with different properties, one is a clean corridor and the other is a polluted corridor. The specific pressure gradient control is as follows: clean corridor>feeding room>polluted corridor, forming a pressure gradient of 40-30Pa, 30-20Pa, and 20-10Pa, that is, the pressure in the clean corridor is high, and the pressure in the polluted corridor is low. This pressure gradient can prevent bacteria from outdoor or adjacent rooms from entering the room through gaps such as ceilings, floors, walls, and windows, as well as prevent the odor from the animal room from dissipating outward, and control the flow of odor to prevent cross contamination. Personnel entering the feeding room should follow a one-way principle and exit the contaminated corridor after completing the treatment work, in order to control the pollution within a small range.

The air supply volume of laboratory animal cleanroom air conditioning is mainly determined by two aspects: first, meeting the requirements of cleanliness level; The second is to meet the indoor temperature and humidity requirements. When using a barrier system, its technical specifications stipulate an indoor air exchange rate of 10-20 times/h, mainly based on the requirements of indoor odor control. Through calculation, the results generally exceed the air supply volume required to maintain indoor thermal and humidity balance and other parameters. Although the heat generation of experimental animals themselves is also an important factor, the heat generation of animals is related to their activity, and the heat generation is generally small. Generally speaking, meeting the cleanliness level of air supply is sufficient to meet the requirements of animal rearing and maintain fresh indoor air.

More products of the company: dust-free purification engineering, laboratory purification engineering, ventilation purification engineering, operating room purification engineering