Air Monitoring Standards Articles

  • How to pick a good generator

    Cylinders and Dewar tanks are extremely inconvenient and costly to replace, but they also come with some safety risks. Now, more and more laboratories are beginning to use gas generators to replace those cylinders or their liquid nitrogen, because generators are both safe and convenient. ...

  • ISO Standard describes aerosol generation for air exposure studies of nano-objects and their aggregates and agglomerates

    The International Organization for Standardization (ISO) recently published standard ISO/TR 19601:2017, “Nanotechnologies — Aerosol generation for air exposure studies of nano-objects and their aggregates and agglomerates (NOAA).”  ISO states that, to evaluate the inhalation toxicity of NOAA, it is important to consider certain ...


    By Bergeson & Campbell, P.C.

  • On PM 2.5 Filters, Let’s just clear the air between us; ok?

    In the area of a former military building complex in the Chaoyang District of Beijing is a unique and thriving artistic community.  In the middle of this art district, is a strange 7-meter tall tower shaped like an avant-garde metallic pineapple.  Designed by Dutch artist Daan Roosegaarde, it is both an artistic creation and a functional tool meant to test a possible solution for ...


    By Sterlitech Corporation

  • The benefits of monitoring compressed air

    Compressed air is used in many manufacturing processes for many different reasons, from the actuation and control of pneumatic valves and cylinders to the operation of process machinery and tooling. It can also be used as a transport medium for bulk materials or as a purge gas. For all its uses it is nonetheless expensive. This is why, through detailed monitoring, a business can enjoy the ...


    By Contrec Europe Limited

  • Is it really possible to improve superlatives? - Absolutely, with positive displacement blowers from AERZEN! The new generation Delta Blower G5plus is on the market!

    AERZEN set standards with the Delta Blower positive displacement blowers and raised the bar ever higher for performance, economic efficiency and environmental protection. To expand upon the success of the blower series, an exciting new design sets energy saving records. The innovative assembly concept combines proven features and newly-gained advantages. Delta Blower G5plus achieves up to 5% more ...

  • Case study : VOC analysis in ambient air by FID dectection - Complete system airmOzone

    Ozone concentration has been multiplied by 5 in the last century in the middle latitudes of the northern hemisphere from 10 PPB in 1874 to approximately 50 PPB today. This is an increase of 1.6% per year; the trend is probably higher (2.4% a year) over the last decades. (Chapter 1 of the International Geosphere-Biosphere Program - World Climate Research Program) In order to stop this global ...


    By Chromatotec Group

  • Fluorophenyl LC Phases- what you should know

     They may be called PFP, PFPP, pentafluorophenyl, fluorophenyl or F5 phases. What they all have in common is the structure shown above (the pentafluorophenyl  group) attached to the silica particles. Most modern phases contain a propyl spacer between the above group and the silica, so that the phase looks something like this: ...


    By Restek Corporation

  • Making a TO-15 Working Standard and the Super Standard Calculator – V2.01

    We already learned how to calibrate our TO-15 system, what our concentration units mean, and how to properly read our vacuum gauge while pressurizing samples. We are clearly going out of order here, because I have never covered how to prepare a working standard (necessary for ...


    By Restek Corporation

  • Xylem unveils fifth generation HYDROVAR

    Highly efficient variable speed drive reduces energy consumption Xylem, a global water technology leader, has released the fifth generation HYDROVAR, an intelligent pump controller that accurately adapts to system demands, helping end users realize cost and energy savings while achieving optimum system performance. The new drive can reduce energy consumption of a pump by as much as 70 ...

  • Primary Standard Gas Flow Calibration—The Only Guarantee of Accuracy

    At Sierra, we have a saying: “An instrument’s accuracy is only as good as its calibration.” The accuracy of your mass flow controller (MFC) is essential in assuring the efficiency, performance, and quality of your flow meter. In many cases, if your instrumentation is not calibrated, then a decline in performance is possible due to ...


    By Sierra Instruments, Inc.

  • If carbon pricing is so great, why isn’t it working?

    Political hurdles and low prices have made carbon pricing a low-impact affair. But there’s still hope it can help limit climate change. Earth’s atmosphere has long served as a free dump for carbon dioxide and other greenhouse gases generated by humans. That is changing as policy-makers embrace economists’ advice that the best way to cut greenhouse gas emissions is to charge an ...


    By Ensia

  • AQMesh tracks pollution hot spots

    Location Wales (UK) Environment / location Rural, major roadside Installation Single AQMesh pod used in several locations Application Monitoring traffic emissions Objectives Having identified concerning levels of NO2 that breached ...


    By AQMesh

  • Can we bury the carbon dioxide problem?

    Seriously — carbon capture and storage could be a game-changer. Mention “carbon capture and storage” — the process of trapping carbon dioxide produced in fossil-fuel burning or other industrial processes and burying it underground — in polite company, and you’re likely to be pounced on. It’s absurdly expensive. It can never be rolled ...


    By Ensia

  • Interview: CNPC on China’s gas developments & environmental policies

    In this interview, conducted at Gastech, we had the pleasure of interviewing Shan Weiguo, Head of Gas Market Research at CNPC. We discussed China’s recent gas developments and its policies on lower emissions, energy security and the future of the country’s energy ...


    By dmg :: events

  • Lake water levels for calibration of the S-HYPE model

    Lake water levels are easy to measure, and can be seen as a transformation of discharge. Water level measurements from 42 lakes in Sweden were analysed, and eight of these lakes were modelled using the Swedish S-HYPE model. The objective was to test if a hydrological model can be calibrated using water level data instead of discharge. A semi-analytical lake routing was developed to resolve ...


    By IWA Publishing

  • The dangers of carbon dioxide

    We are often asked about the effects of carbon dioxide on the body and how to tell if there is a gas leak. As a result of this, we have created this post to provide additional information about exposure to carbon dioxide. What is carbon dioxide? Carbon dioxide (CO2) is a gas which occurs naturally in the Earth’s atmosphere at ...


    By Analox Sensor Technology

  • Aircraft CO2 Standards – One Step Closer But No Take Off Yet!

    The long awaited standard for aircraft CO2 emissions made further headway at a recent meeting of the UN’s International Civil Aviation Organization (ICAO). The new environmental measure was unanimously recommended by the 170 international experts on ICAO’s Committee on Aviation Environmental Protection (CAEP), paving the way for its ultimate adoption by the UN ...


    By GLOBE Foundation

  • From OHSAS 18001 to ISO 45001: How the Coming OHS Management System Standard Will Impact Your Business

    Sometimes it seems as if major changes in the world of environment, health and safety (EHS) management are few and far between. One change we can count on is ISO 45001, the international occupational health and safety (OHS) management systems standard expected to be issued final in October 2016. Whether your organization already has an OHS management system or not, the advent of ISO 45001 will ...


    By Rivo, a Sphera Company

  • Supercritical carbon dioxide – from coffee to dry cleaning

    Sometimes I can’t start the day without my morning coffee, and I’m sure most adults would agree that consuming caffeine is a part of their daily routine. A regular cup of coffee can contain 95 to 200mg of caffeine depending on what bean is used and how it has been prepared. In moderation, caffeine can elevate your mood, reduce tiredness and make you more alert, however it can also ...


    By Analox Sensor Technology

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