Analysis of the latest version of microbial sampler
The six-stage air microbial sampler is a six-stage sieve percussion type air microbial sampler. It is a dual-function cascade multi-stage impact sampler. It can be widely used in environments such as sanitation and epidemic prevention, biological cleansing, pharmaceutical, fermentation industry Monitoring and relevant research and teaching departments to conduct air microbial sampling research, air microbial sampler (level 6) provides a basis for evaluating air environment microbial pollution hazards and its prevention measures
working principle
? In addition to being able to determine the number of air microbes, the six-stage sieve impact air microbial sampler can also measure the size of these particles, and the latter is one of the important indicators to determine the hazards of air microbes. It is composed of six impactors. Each stage is actually a single-stage sampler. Using the principle of 6 repeated impacts, most particles, especially those that settle in the trachea and lungs, basically hit, so it collects The resulting particle size range is naturally wider than that of a single stage, which is unmatched by some single-stage impact samplers, and the circular nozzle of the sampler has a higher sampling efficiency than the nozzles of cracks and the like. When sampling, the relative humidity increases step by step (from 39% of the first level to 88% of the sixth level), which is very conducive to the survival of vulnerable pathogenic microorganisms, especially virus particles. Because of its distinctive characteristics, it is widely and effectively used in the monitoring of airborne microorganisms, and it has been in constant use since its inception. Recommended by experts as an international standard sampler. The six-stage air microbial sampler simulates the anatomical structure and aerodynamic physiological characteristics of the human respiratory tract. It uses the principle of inertial impact to collect microbial particles suspended in the air on the surface of the sampling medium in stages, and then it is used for cultivation and microbiological analysis. .
component
The entire instrument of the six-stage air microorganism sampler is composed of an impactor, a host (flow meter), a timer, and a tripod.
Principle of use
The impactor is a 6-layer aluminum alloy disc with tiny holes. Place the agar plate under the disc. There is a sealing rubber ring between each disc. The discs are firmly connected by three spring hooks. There are 400 circular arrays on each disc, which are reduced in layers, and the standard sampling flow rate is 1 cubic foot (28.3L / min). When the airflow containing microbial particles enters the uppermost sampling port, as the airflow increases layer by layer, microbial ions of different sizes impinge on the corresponding agar surface according to aerodynamic characteristics. The size range of the particles trapped on each level is determined by the airflow velocity of the perforation at that level and the particle interception rate of the previous level. The first and second particles resemble those captured by the upper respiratory tract of humans, and the third and sixth particles resemble those captured by the lower respiratory tracts of humans. The six-stage air microbial sampler can provide plates with ordinary nutrient agar.
The company's main stainless steel water collector, vacuum detection box for tank bottom welding seam, reading instrument, eight-level air microbial sampler, relay comprehensive tester, dual-wavelength scanner, coating thickness gauge, soil grinder, tempered glass surface Flatness tester, sound sensor, portable electric water level meter, network port flowmeter, corrosion rate meter, portable scratch tester, freezing point tester, water quality tester, online ammonia gas tester, coating thickness gauge, coating Thickness gauge, soil crusher, digital thermometer, gas sampling pump, ceramic impact tester, automatic crystallization point tester, drug freezing point tester, reed switch tester, constant temperature water bath, gasoline root transfer, gas Sampling pump, tempered glass tester, water quality tester, PM2.5 tester, respirable particulate matter tester, high frequency heat sealer, strain control triaxial instrument, milk body cell tester, helium concentration tester, soil moisture conductivity Rate tester, field strength meter, collection box, transmittance tester, capillary water absorption time tester, redox potentiometer vibration tester, carbon monoxide carbon dioxide detection , CO2 analyzer, oscilloscope polarimeter, slime content tester, car starting power supply, automatic potentiometric titrator, portable thermometer, zirconia analyzer, reed switch tester, precision conductivity meter, TOC water quality analysis Instrument, microcomputer plasticity measuring instrument, wind direction station, automatic spotting instrument, soil redox potentiometer, digital thermometer, portable total phosphorus tester, corrosion rate meter, constant temperature water bath, residual chlorine detector, free expansion rate meter , Centrifugal cup, concrete saturated vapor pressure device, particle strength tester, Gauss meter, automatic coating machine, safety valve grinding tool, weather station, kinesthetic azimuth instrument, dark adaptation instrument, odor collector, rain gauge, four-in-one Gas Analyzer, Emulsion Concentration Meter, Dissolved Oxygen Meter, Temperature Measuring Instrument, Thin Layer Spreader, Temperature Recorder, Aging Instrument, Noise Detector, Constant Temperature and Humidity Chamber, Split Resistivity Tester, Initial Tack and Holding Tack Tester, infrared carbon dioxide analyzer, hydrogen lamp, kinesthetic azimuth meter, constant temperature animal operating table, cooling fan, grease acid value detector, viscosity number analyzer, colony counter, Meteorological station, rain gauge, Kjeldahl nitrogen analyzer, fluorescent whitening agent, the company adhering to the "customer first, forge ahead" business philosophy, adhere to the "customer first" principle to provide our customers with quality services. Welcome to patronize!
Hollin multifunction table, you can use it as training table, standing workstation, overbed or sofa table, a good student study table or drafting or craft desk.It can be placed in your home study, bedroom and office to play its practical use such as serving as a Computer Desk, office work station, study stable or writing desk.
The tary side table can be moved to anywhere with the universal wheel which can be locked to fix at the bottom of this end table.
The Hollin standing laptop table is eqqiped with slot to put IPAD or kindle which can release you spine and neck.
Training Desk, Training Table, Foldable Desk,Computer Table
Foshan Hollin Furniture Co.,Ltd , https://www.foshanhollin.com