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What is the 100,000-level industrial clean room standard?

http://www.cleanroom-china.cn time:2020/03/19 16:02:58 click:6

What is the 100,000-level industrial clean room standard?


Class 100,000 industrial clean room


So let's see.


100,000 level high clean workshop: refers to the clean level, can be understood as clean room, but clean room also needs to breathe, the air into the need to go through the purification room purification, and then sent to the clean room. Class 100,000 (100,000) requires 15 to 19 air changes per hour, with the air purification time not exceeding 40 minutes after complete air changes.


Class 100,000 industrial clean room


Industrial clean room cleanliness level:


Hundred level > thousand level >10,000 level > 100,000 level > 300,000 level


The cleanness level of industrial clean room is in fact that the value is smaller, the higher the purification level is, the higher the cleanliness is and the higher the cost is. One hundred thousand level industrial clean room is to point to the clean workshop that air clean degree is one hundred thousand level, namely the particle that every cubic meter controls inside the workshop is in 10 w less than, food workshop should reach 100 thousand level.


01. Class 100,000 industrial clean room standard


100,000-level industrial clean room standard I: the number of particles with dust size ≥ micron shall not exceed 3.5 million, and the number of particles with size ≥5 micron shall not exceed 20,000.


100,000-level industrial clean room standard ii: the allowable number of microorganisms, the number of plankton-bacteria shall not exceed 500 /m; The number of sedimentation bacteria should not exceed 10 / petri dish.


Class 100,000 industrial clean room standard iii: differential pressure. The pressure difference between clean rooms with the same clean grade should be the same, and the pressure difference between adjacent clean rooms with different clean grades should be ≥5Pa, and that between clean rooms and non-clean rooms should be ≥10Pa (mainly to ensure the air flow from the clean area to the non-clean area and to avoid airflow backflow).

What is the 100,000-level industrial clean room standard?

Principle of industrial clean room


Generally after the first effect filter, in effect filter, high efficiency filter and other three segments and airflow to effect at the beginning of purification, humidification section - heating section - table hot section to table cooling section, the effect of purifying - fan air - pipe to efficiently purify tuyere, blow into the room to go at the beginning of the dust particles such as bacteria - return air shutters - effective purification, repeat the above process can achieve purification.


03. How to check whether the 100,000-level industrial clean room meets the standard?


Sedimentation bacteria determination method:


Sedimentation bacteria refers to bacteria that are carried in dust that settles on the ground or surface of an object. Under the condition of open aseptic operation table, a number of aseptic petri dishes with the inner diameter of 90mm were taken. During aseptic operation, more than 15ml of nutrient AGAR medium was injected into the melted and cooled to 45℃, and inverted into an incubator at 30~35℃ for 48 hours for aseptic use.What is the 100,000-level industrial clean room standard?The petri dishes covered with nutrient AGAR medium were placed in the designated area about 1 meter from the ground (generally, one plate was placed every 10 square meters), exposed to the air for 30 minutes, and the sedimentation bacteria were collected, covered with the plate lid, placed in the incubator at 30-35℃ for 48 hours, and counted. The workshop should be in the operating state. The number of sedimentation bacteria detected, less than or equal to 10 per dish, can reach 100,000 industrial clean room standards.


Generally speaking, the sedimentation bacteria method can be monitored once a month. The commonly used instruments in industrial clean room engineering are temperature and humidity meter, temperature and humidity meter, digital display anemometer, infrared thermometer, differential pressure meter, multi-function sound level meter, particle counter, air volume meter, etc. They are conventional real-time detection equipment, to help detect whether to reach the level of 100,000 industrial clean room standards.


04. Documents and records required for the verification of industrial clean room of class 100,000


Company general layout environment comply to the highest industrial clean room floor plan duct layout plan to send floor plan, the plan of the inlet exhaust duct air filter distribution plan of lamps and lanterns industry clean room air conditioning unit directions acceptance of work report of third party industrial clean room management system of environmental monitoring report is the, level industry clean room inspection standards of explanation, need to constantly monitor industrial clean room, still have to work strictly according to use standard, this is up to level 100000 industrial clean room standard is the indispensable condition, trying to clean workshop purification space with security, energy saving, human nature, Create a good living and working environment.