GB 15979-2024 Level 6 Impact Microbial Air Sampler

1、 InstrumentIntroductionGB 15979-2024 Level 6 Impact Microbial Air Sampler

FA-1Type 6The air microbial sampler is a dual function multi-stage impact sampler,Complies with relevant standards《GB/T 18883-2022 Indoor Air Quality Standards《HJ/T 167-2004 Technical Specification for Indoor Air Quality Monitoring《GB/T 18204.3-2013 Methods for hygiene inspection of public places (airborne microorganisms)、《GB 15979-2024Hygiene Requirements for Disposable Sanitary ProductsThe requirement of waiting,It can be widely used for monitoring in environments such as hygiene and epidemic prevention, biological cleanliness, pharmaceuticals, and fermentation industry, as well as for sampling and studying air microorganisms in relevant research and teaching departments, providing a basis for evaluating the hazards of microbial pollution in the air environment and its prevention and control measures.
The FA-1 airborne microbial sampler simulates the anatomical structure and aerodynamic physiological characteristics of the human respiratory tract. Based on the principle of inertial impact sampling, microbial particles suspended in the air are collected at different levels on the surface of the sampling medium for cultivation and microbiological analysis. The entire instrument consists of an impactor, a main unit (flow meter), a timer, and a tripod. The impactor is a 6-layer aluminum alloy disk with tiny holes. Place the agar plates on top of the discs, with sealing rings between each disc. The discs are firmly connected together using three spring hooks. Each disc has 400 small holes arranged in a circular pattern, decreasing layer by layer and with precise dimensions. The standard sampling flow rate is 1 cubic foot (28.3 L/min). When the airflow containing microbial particles enters the top sampling port, due to the increasing height of the airflow layer by layer, microbial particles of different sizes collide with the corresponding agar surfaces according to aerodynamic characteristics. The size range of particles captured at each level is determined by the airflow velocity of the holes in that level and the particle interception rate of the previous level. The particles captured by the upper respiratory tract in levels 1 and 2 are similar to those captured by humans, and the particles captured by the lower respiratory tract in levels 3 to 6 are similar to those captured by humans. This largely replicates the penetration and deposition of these particles in the respiratory tract.
2、 ProductFeatures:
In addition to measuring the number of air microorganisms, the FA-1 air microbial sampler is also capable of measuring the size of these particles, which is one of the important indicators for determining the harm of air microorganisms. It is composed of six impactors combined into one, with each stage actually being a single-stage sampler. Using the principle of six repeated impacts, the vast majority of particles, especially those settling in the trachea and lungs, are basically impacted. Therefore, the particle size range it collects is naturally wider than that of single-stage impactors. This is what some single-stage impactors have, and the circular nozzle of the sampler has higher sampling efficiency than the slit and other nozzles. The relative humidity increases step by step during sampling (from 39% in the first level to 88% in the sixth level), which is very beneficial for the survival of fragile pathogenic microorganisms, especially virus particles. Due to its unique characteristics, it has been widely and effectively used for monitoring airborne microorganisms, and has been widely used since its inception.
IIITechnical parameters:GB 15979-2024 Level 6 Impact Microbial Air Sampler
measurement range Capture rate:≥98%

Sampling height: regular1.8m，canOptional special bracket, with a collection height of up to3 meters

canOptional dedicated sampling platform, which can achieve up to four sets of simultaneous sampling for a single bracket

Capture particle range ：
Level 1:>7.0 μ m aperture 1.18mm
Second level:4.7μm –7.0μm 孔径0.91mm
Third level:3.3μm–4.7μm 孔径0.71mm
Level 4:2.1μm–3.3μm 孔径0.53mm
Level 5:1.1μm - 2.1μm 孔径0.34mm
Level 6:0.65μm–1.1μm 孔径0.25mm
sampling flow28.3L/min adjustable accuracy ≤ 5%
noise≤50 db
Electronic timer scope1-99 secondsHour, accuracy<1%
working power supply220V/AC
power≤45W
warranty period1 year
4Basic configuration:
1. Host: One set (including vacuum pump, flow rate)plan, timers each1)
2. Impactor: Level 6AndersonOne impactor
3. Tripod: one unit
4. Operation manual: one copy
5. Special accessories such as connecting pipes: one set
6. Aluminum alloy suitcase: one