New technology for space sterilization in microbial clean area - dry mist hydrogen peroxide sterilization system
[Overview] Microorganisms are the general term for all tiny creatures that are invisible or invisible to the naked eye. Microbial contamination refers to the adverse effects caused by the production and attachment of microorganisms to a specific environment. If the bacteria get the necessary nutrients, a certain amount of water and the right temperature, they can multiply quickly and they can multiply at an alarming rate. Usually a bacterium produces 281 mega-million bacteria in just 24 hours. Clean areas, also known as clean rooms, require rooms that control the amount of dust particles and micro-organisms in the environment. Their building structure, equipment and their use should be able to reduce the introduction, generation and retention of contaminants in the area. Air is a dangerous carrier of pollution. Dust and water droplets filled with microbes are an important source of pollution through the use of air as a medium to invade our products. When we talk, cough and sneeze, the polluted water droplets are constantly being placed in our workplace from our respiratory tract. The dust particles are continuously circulating through our air flow throughout our entire pharmaceutical plant. The dust particles present in the air contain microorganisms (bacteria, etc.). Therefore, air is the main medium for invading the pollutants of our products. This is why it is extremely important to keep the air clean as much as possible. The dry mist hydrogen peroxide sterilization system is a new space sterilization technology for controlling microorganisms in the clean area. Recently, this technology has been adopted and pursued by many pharmaceutical companies.
[Keywords] microbes, clean areas, space sterilization, new sterilization technology, dry mist hydrogen peroxide sterilization, hydrogen peroxide sterilization
The dry zone dry mist sterilization system mainly uses physical means to convert the liquid sterilizing agent (main component hydrogen peroxide + reactive colloidal silver ion) into a "dry mist" in an aerosol state, allowing it to be dispersed in the need of sterilization. Sterile clean area to achieve thorough sterilization, can replace the existing formaldehyde fumigation. Through the gasification method of stable hydrogen peroxide and reactive colloidal silver ion dry mist, the whole sterile clean area and surface of the clean area are sterilized, and the sterile sterilization area of ​​the pharmaceutical customer is provided through a professional sterilization scheme and software. Sterile clean area sterilization provides a complete set of thorough sterilization methods that are thorough, convenient, safe and environmentally friendly. The challenge experiment of black Bacillus subtilis indicator can achieve the log 4-6 power killing effect.
Its principle of action: the spraying process is completed by spreading dry mist to the area that needs to be sterilized. When the average diameter of the droplets is less than 10 microns, the ejected mist can be said to be "dry"; the small droplets will bounce off the wall and will not rupture and adhere to the surface. All conditions are established to effectively move the sterilant in a gasified form to a designated area. This form of characteristics determines that they can be moved to areas that are difficult to reach at ordinary times.
Dry fog has the following properties:
1. Dry mist droplets carry out irregular motion (Brown motion principle) and will not settle;
2. Dry mist droplets do not aggregate together to produce large droplets;
3. The dry mist will rebound after contact with the surface without rupturing and moistening the surface;
Therefore, these properties of the dry mist gas make it difficult to achieve a good sterile clean area and surface sterilization effect.
Advantages of dry mist sterilization system:
1. The sterilizing agent can be controlled to be sprayed in the form of dry mist. The size of the dry mist particles is controlled at a precise and consistent level, which reduces the risk of condensing liquid and ensures the penetration and disinfection effect on the more complicated and difficult to reach.
2. Can effectively reach all areas of the clean area.
3, the external structure is sturdy, maintenance is simple, no power is required for work.
4. The main components are made of 316L stainless steel and can be sterilized at high temperature.
5, a single machine can be used for disinfection of 20-1000m3 sterile clean area.
6. The entire disinfection process takes a short time, so the shutdown time is greatly shortened compared to formaldehyde fumigation.
7. There is no noise or ultrasonic pollution throughout the disinfection process.
Technical Parameters:
Spray particle size: average 5 μm (particle diameter is the measured value of laser refraction method)
Kinetic energy: power supply
Spray speed: 80m/s
Spray amount: 1000ml/60min
With sporicide dosage: 1000ml
Power: 1.1 kW
Applicable liquid: space sporicide
Sterilization volume: 50-1000 cubic meters
Material: HDPE
Size: 50cmx33cmx34cm (length × width × height)
The sterilization effect of the dry mist sterilization system in the sterile clean area can be verified:
Fully in line with the provisions of the United States Pharmacopoeia (USP), using Bacillus subtilis as a challenge test bacteria, to achieve the kill rate of log4-6, can prove the system to kill various microorganisms in the sterile purification process ability.
Applicable places: Suitable for biosafety laboratories, pharmaceutical factory GMP workshops, infectious wards, etc., where regular disinfection and sterilization are required.
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