Particulate Monitoring Articles
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Inside the Particulate Monitor – Optical Methods
At least two different optical techniques can be applied to measure the concentration of particulates – light absorption and light scattering. Light absorption is frequently used in high-concentration industrial processes, but it has some applications also in ambient air, for example to determine visibility at airports. Light scattering is utilized both in industrial and ambient ...
By OPSIS AB
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Inside the Particulate Monitor – the Triboelectric Method
The triboelectric measurement principle (in a refined design referred to as Inductive Electrification Technology) can be used to measure dust concentrations in industrial processes. It is based on the dust particles becoming electrically charged as they move through the flue gas duct. The charges are picked up by an insulated probe inside the duct and then registered. Electrical Characteristics ...
By OPSIS AB
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Inside the Particulate Monitor – Filter Samplers
Some time ago, OPSIS published descriptions on how some well-established types of gas analysers work, namely those based on spectrometers, interferometers, and tuneable diode lasers. They all utilize absorption of light to determine the concentrations of gaseous pollutants such as nitrogen oxides (NOX), sulfur dioxide (SO2), hydrogen chloride (HCl), ammonia (NH3), and many more. The same ...
By OPSIS AB
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Why is 50% the Limit for Particle Counting Efficiency Sizing Thresholds?
Particle counting efficiency is crucial in particle measurement, especially when using optical particle counters. This term denotes the likelihood of precisely detecting and enumerating particles within a specified size spectrum. In this context, the term “particle counting efficiency” represents the ability of the particle counter to quantify particles of a given size accurately. It ...
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How Particle Counting Efficiency Affects Distribution Data
In the realm of optical particle counters (OPCs), counting efficiency and resolution are pivotal in determining the accuracy and reliability of particle distribution data. These technical aspects are essential for industries that require precise environmental monitoring, such as pharmaceuticals, semiconductors, and cleanroom operations. This article dives into the impact of counting efficiency ...
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What is OPC Counting Efficiency?
Optical particle counters (OPCs) work by preserving the air quality of a cleanroom environment. To learn more about them, this article dives into OPC counting efficiency and resolution. Alongside this, it answers the key questions that you may consider when thinking about selecting and using ...
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Data Management for Environmental Monitoring in a Pharmaceutical Manufacturing Facility
What Data Management Factors Should be Considered When Setting up Environmental Monitoring in a Pharmaceutical Manufacturing Facility? Pharmaceutical Manufacturing Data Managment is one of the important steps for effective contamination control In a typical pharmaceutical manufacturing plant, there are several important tasks to ensure the product can be handled without being contaminated. All ...
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Empowering the Almaty and Bishkek Air Quality Initiative with Clarity Node-S air quality sensors - Case Study
The ABEC Air Quality Initiative shows that with the right tools and commitment, we can combat the invisible killer that is air pollution - learn how air quality sensors are used in Almaty & ...
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Gas cooking impact on indoor air quality: Cairsens micro-sensors used for largest-ever study conducted in Europe - Case Study
CLASP is an international non-profit organization, focused on improving the energy and environmental performance of household appliances, to ensure they are planet-neutral and people-positive. CLASP is data driven, providing technical analysis and evidence to advise governments around the world on setting ambitious appliance efficiency policy. ...
By ENVEA
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EU GMP Annex 1 FAQ’s - Environmental Monitoring
The following frequently asked questions arose at a presentation given by PMS Senior GMP Scientist, Mark Hallworth, on the 6th of December on the topic of EU GMP Annex 1 Environmental Monitoring. Is there an international standard or guideline for sampling 1m³ total particle counts and viable particles with air samplers like the MiniCapt® mobile device for routine monitoring of ...
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High-Purity Process Chemicals: Applications of 20 nm Liquid Particle Counters in Contamination Control
Abstract In the intricate landscape of semiconductor manufacturing, the relentless pursuit of smaller technology nodes necessitates a meticulous approach to controlling particle contamination. As critical particle sizes plunge into the sub-10 nm range, traditional chemical particle counters face a sensitivity gap. Bridging this gap, the Chem 20™ chemical particle counter emerges as an ...
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Compliant emissions monitoring for a foundry plant in Brazil - Case Study
Context The customer is a global company specialized in developing and manufacturing highly engineered structural cast iron components applied to complex metallurgical and geometrical components extensively used in capital goods. It develops solutions present in the diversified segments, such as freight transport (all modals), infrastructure, agriculture, power generation and many other ...
By ENVEA
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Air Pollution Part 3 – Sources of Particulates
“Particulates” is a complex mix of natural and synthetic microscopic particles such as mineral dust, sea salts, ammonium salts, organic matter, and soot. There are both natural and anthropogenic sources of particulates in the air. The primary concern to health is the ability of particulates to penetrate deep into the lungs of humans and other living organisms, where it affects the ...
By OPSIS AB
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How to Choose the Right Cleanroom Particle Counter
Maintaining a contamination-free environment is a prerequisite for high-tech manufacturing and scientific research. Cleanrooms are central to this endeavour. Although a cleanroom is a critical part of maintaining a working environment, they cannot guarantee required cleanliness standards without robust monitoring systems such as particle counters and air quality monitors. A cleanroom particle ...
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5 Key Principles of Cleanroom Particle Counting
Cleanroom particle counting is essential for accurate functioning and meeting certification criteria in controlled environments. In this blog post, we take a look at five key principles of cleanroom particle counting, exploring the significance of each principle and how it contributes to maintaining the safety and quality of products manufactured in such ...
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The U.S. National Ambient Air Quality Standards
Air quality guidelines and standards have an important role to play in the management of air quality. Such standards are generally established and enforced by regulatory agencies in national governments. It is generally accepted that an air quality standard is a description of a level of air quality or air pollution, which is adopted by a regulatory authority as enforceable. The US Clean Air ...
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Factory Flue Gas Treatment Methods
Flue gas treatment is a process that removes pollutants from exhaust gases produced by industrial processes, power plants, and other sources before they are emitted into the atmosphere. Specific flue gas treatment processes can vary based on the type of contaminants and regulatory requirements. The following is an overview of typical flue gas treatment processes: Flue Gas Collection: The first ...
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Major cement manufacturer selects ENVEA to equip plant in Pakistan with certified AQMS system - Case Study
Bestway Group is a diversified family-owned business with an annualized turnover above £4.5 billion. Starting off as a chain of retail convenience stores, the Group has grown to become a diversified multinational business with interests across the wholesale, pharmacy, real estate, cement and banking sectors. The Group is also the largest overseas investor in Pakistan. ...
By ENVEA
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The PSM 2.0: A Game-Changer in Measuring Cluster and Nucleation Mode Particles
How Airmodus revolutionized nanoparticle science with the PSM Airmodus Ltd. was originally established to bring to life a groundbreaking invention – the first-ever Particle Size Magnifier (PSM) capable of seamless 24/7 operation. In 2010, we pioneered continuous measurements of the smallest particle clusters across diverse environments, a landmark achievement that propelled scientific ...
By Airmodus Oy
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Do Fume Hoods Have HEPA Filters?
The primary purpose of a fume hood is to provide protection to lab workers while working with toxic fumes, gases, and chemicals by filtering the air inside the laboratory. But how exactly do fume hoods achieve that? Do fume hoods have HEPA filters? Chemical Fume Hoods There are several different types of fume hoods and the type that will work best for your workspace will depend on several ...
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