Air Sampling Articles
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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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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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Everything About NDIR Sensors
A nondispersive infrared (NDIR) sensor serves as a gas sensor for detecting and quantifying gases in the atmosphere, along with their concentrations. NDIR sensors operate on the principle of molecules absorbing specific wavelengths of infrared light. Air samples are collected in a tube and subsequently analyzed under a source of light. NDIR gas sensors are known for their exceptional precision ...
By JXCT
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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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Innovative Uses of Expandable Graphite
Flame Retardant Properties of Expandable Graphite One of the most renowned characteristics of expandable graphite lies in its exceptional flame retardant properties. When exposed to high temperatures or open flames, this substance undergoes a remarkable transformation. Under these conditions, the layers of graphite expand, forming a highly insulating intumescent barrier. This intumescent ...
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Flame Retardant Chemicals: Ensuring Safety Across Industries
Flame Retardant Chemicals Market With the growing emphasis on safety regulations and increasing concern for fire hazards across various industries, the flame-retardant chemicals market has witnessed significant growth in recent years. According to relevant flame-retardant market analysis reports, the global flame-retardant market will be worth up to US$9.13 billion in 2023. The application fields ...
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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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Techniques for Chromatography Testing and Mass Spectrometry
Chromatography testing and mass spectrometry are two analytical techniques widely used in scientific research, pharmaceuticals, food safety, environmental analysis, and forensic investigations. These techniques play a crucial role in identifying and quantifying chemical compounds, determining the purity of substances, and understanding molecular structures. In this article, we will explore the ...
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Air Pollution Part 2 – Sources of Gaseous Substances
Air pollutants are effectively either specific gas-phase molecules or small solid-phase particles suspended in the air. The latter are as a collective referred to as particulates. Let’s take a closer look at the origins of gaseous pollutants. Many anthropogenic activities give rise to gaseous air pollutants, but there are also a few natural sources. Stationary and Mobile Combustion ...
By OPSIS AB
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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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Advancing Accuracy: The Role of Precious Metal Testers in Authenticating Valuable Commodities
Precious metal testers are indispensable tools in the world of commerce and finance, carefully designed to ensure the authenticity of valuable materials such as gold, silver, and platinum. This article delves into the significance of precious metal testers and their crucial role in assessing the purity and quality of precious metals. The sophisticated technology employed in these devices has ...
By TestXpert
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Types of Air Pollutants
Indoor air quality is vital to human health. Having high-quality indoor air helps humans live, breathe and work better. However, many common air contaminants can make their way into indoor environments, putting occupants at risk of both short- and long-term health effects. This guide to the types of air pollutants will help educate professionals on the sources of air pollutants that may ...
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Using a Ternary Diagram or Ternary Plot in Geochemistry?
A ternary diagram, also known as a ternary plot or triangle plot, is a three-variable graph used to represent the composition of a mixture or system composed of three components. These ternary diagrams are typically displayed as equilateral triangles, with each apex representing one of the three components. The interior of the triangle represents all possible combinations of these components, and ...
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Choosing a Particle Counter
A particle counter is used for monitoring and diagnosing particle contamination within specific clean media, such as air, water and chemicals. Particle Counters have the ability to count and size particles by separating them into different size channels and can be used for room classification, room monitoring or contamination diagnosis. When choosing an aerosol particle counter, you need to ...
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Hydrogen Chloride Analyzer: Your Solution for Precise HCL Measurement!
Are you ready for a deep dive into Hydrogen Chloride Analyzers? These devices measure Hydrogen Chloride in the air. You’ll learn all about them here! With this knowledge, you can keep your workplace safe and sound. Let’s jump ...
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How to Regulate Your Cleanroom Space
Product manufacturing, research and development, and other applications in fields ranging from aerospace and semiconductors to pharmaceuticals require a sterile environment for safe operations. As such, cleanrooms are very important in these industries, helping maintain product integrity and limiting the presence of airborne contaminants. Standard HVAC equipment is insufficient for managing ...
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Understanding UV-DOAS Gas Sensors: A Comprehensive Analysis!
Welcome! You’ll learn a lot about UV-DOAS Gas Sensors here. Your journey will start with basic UV-DOAS technology. Next, understand its components and types of gases it can detect. You’ll also dive into how it calibrates, and its limits. Compare it with other gas sensors too. Finally, explore how it manages data. Now, start your exciting, enlightening ...
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The consequences of wildfires for air quality - and why it`s important to have a real-time air monitoring network for wildfire season
Wildfires have a severe impact on air quality and, consequently, on human health. While wildfire smoke’s damage can vary depending on its composition and density across an area, research shows that it may not only have short-term damage but perhaps also a cumulative negative impact on human health. However, by recognizing the need for real-time air quality monitoring to collect data and ...
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Custom Engineering and Design Capability
ANSI N13.1-2011 stack sampling location qualification testing ANSI N13.1 stack sampling system design Custom air sampler design Integration of radiation detectors and air sampling systems ANSI N13.1-2011 Design Considerations ANSI N13.1-2011 requires that sampling systems satisfy the following design criteria; (1) representative particles from the stack flow must be drawn into the ...
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First Quantum Minerals Improves Operational Compliance with Clarity - Case Study
In this case study, you’ll learn how Kansanshi Mine improved its compliance monitoring, reduced operational overhead and increased reliability by deploying its first network of Clarity Node-S devices. In this case study, you’ll learn how Kansanshi Mine improved its compliance monitoring, reduced operational overhead and increased reliability by deploying its first network of Clarity ...
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