Update: 2019-11-05 17:20 Source: LUFTMY
Particle count is the key function of air quality monitoring in the whole science and technology laboratory, including biotechnology, biopharmaceutical production, semiconductor development and manufacturing, Nanotechnology Laboratory, which is actually any way that any laboratory with products or processes is sensitive to environmental pollution.
For example, in the manufacture of pharmaceuticals, superconductors and many other high-quality products, it is essential to always maintain strict sterility and air purity to ensure that all final products are pollution-free and compliant. Therefore, in the modern laboratory environment, it is necessary to use the particle counter which is also used for particle sizing to monitor the air quality parameters.
A variety of particle counters are available. In many of these instruments, particles are counted as they pass through the chamber and are illuminated by a high-intensity light source in the chamber One of several different methods can then be used to detect the total number of particles present in the air sample.
In the process of light scattering particle counting, the light is deflected by the particles in the sample of the detection cavity, and then the deflected light is measured by the light sensor.In a light darkening or light blocking device, the light sensor detects a reduction in light due to the presence of particulate matter in the sample being analyzed.The third technique, called direct imaging particle counting, involves using complex computer imaging software to analyze high-definition video, and irradiating the video recorded as particles in the sample by high-intensity beam.Particle counting instruments have different sizes and may be used for slightly different functions in a laboratory environment.Small, portable, hand-held particle counters are useful for regular air quality checks in many different parts of the laboratory.Larger particle counters can be fixed in one place and then used to analyze larger air volumes.For long-term monitoring of air quality, they may operate 24 hours a day, 7 days a week.
Biotechnology and biopharmaceutical laboratories are particularly concerned with maintaining a clean atmosphere to ensure the integrity and purity of their final products.In this work environment, it is very important to monitor the concentration of aerosol particles (that is, the number of particles in the air).Air particle counter is an important measuring instrument, which is used to detect and quantify particles in the air.Aerosol particle counter can be used to determine the number and size of particles in the atmosphere
Some highly specialized laboratories dealing with supersensitive materials may need a more specialized particle counting instrument, called a condensation particle counter.The traditional optical particle counter can not detect or measure particles smaller than 50 nm.
However, the condensed particle counter can detect particles smaller than 50 nm.They can detect particles as small as two nanometers.They were able to do this because they first used particles from the area under test as the nucleation center to make droplets in supersaturated gas.This process is similar to the way in which clouds are formed in the atmospheric nucleation center through condensation process, but the scale is much smaller, so it is also the name of these instruments.
Many types of modern laboratory operations must always take measures to ensure that the highest standards of air quality are maintained.These standards become more stringent when cleanrooms are needed, for example in the manufacture of semiconductors, disk drives or aerospace components, or in the development and production of pharmaceutical and biotech products.
In high-tech industries like this, components, ingredients, instruments or products can be very sensitive to a little pollution.Therefore, the requirements of clean room air quality standards are very high, and innovative solutions are needed to monitor and detect particles in the air, and timely report the deviation from the standards.Therefore, it is necessary to continuously monitor and evaluate the air quality parameters in the environment of biotechnology, biopharmaceuticals and many other modern laboratories.