Air Sampling Articles

  • Gas Chromatography: MCERTS Certification for Ambient Air Analysis on Benzene and VOCs

    Due to environmental issues, the world of gas analysis is evolving very rapidly.Governments set the rules to limit and control the environmental pollution through legislation.Volatile organic compounds (VOCs),often produced by human activities, are amongst the sources of pollution that need to be identified and quantified for safety reasons. Exposure to high concentrations of certain VOCs is ...


    By Chromatotec Group

  • What is the best way to do trace metal sampling?

    All samplers contaminate or distort in some way. • Plastics may leach metals from ultraviolet inhibitors, metal-organic plasticizers, (rarely) metal catalysts. • Teflon has a rough porous surface into which ions, fine charged particles, and very fine particles may become attached. Errors may occur in your first sample due to these trapped trace elements. • ...

  • What are Kemmerer bottles?

    Based on a 1927 design by Dr. George Kemmerer, University of Wisconsin, the Kemmerer bottle has long been favored by limnologists and fishery biologists. With few moving parts and a foolproof trip, it offers a trouble-free life. Clear acrylic cylinders have the advantage of being transparent: you can see the sample before removal. You can also install thermometers inside acrylic samplers. ...

  • What is a messenger?

    The work horse of water sampling is the simple messenger, the bullet-shaped weight which strikes the trip mechanism and snaps the sampler shut. Send the messenger down the line when you are ready to take your sample – you choose where and when. When you lower your bottle or dredge into the water,it remains open until you close it. Messengers afford nearly foolproof operation – highly ...

  • Software and hardware solutions

    Sierra-CP can meet a wide range of testing requirements with its highly flexible, customized software and hardware solutions Thirty years of successfully meeting tough customer challenges has taught Sierra-CP that the concept of ‘one solution fits all’ just doesn’t work in the automotive testing industry. The company works hard to create an open atmosphere for client ...


    By Sierra Instruments, Inc.

  • Choosing flow monitors for CEMS applications

    As a result of the 1990 Clean Air Act Amendments1, electric power plants must reduce their emissions of sulfur dioxide and nitrous oxides—the primary causes of acid rain. The U.S. Environmental Protection Agency (EPA), in its proposed rules2, designates the 111 Phase I fossil-fueled plants ^roughly 268 boiler units) that must have continuous emissions monitoring systems (CEMS) installed, ...


    By Sierra Instruments, Inc.

  • Particulate partial flow sampling

    The sampling method of the Sierra Instruments Model BG-3 sets the standard for engine particulate emissions measurement protocols of the future sierra instruments In a study at West Virginia University, evidence showed that the Sierra Model BG-3 partial-flow system is equivalent to full-flow CVS. At the August 2008 DEER conference, the university’s Dr Ben Shade presented a paper evaluating ...


    By Sierra Instruments, Inc.

  • Emissions measurement - Discover a new way of particulate emissions measurement for light-duty vehicles

    New article from Sierra in Automotive Testing International Magazine entitled "Emissions Measuremen" explores how combining partial flow sampling and direct exhaust flow measurement provides an ideal solution for particulate emissions measurement from light-duty vehicles. With the phase-in of LEV-3 this year targeting a 3mg/mile PM limit, followed by a 1mg/ mile PM limit phasing-in by 2025, ...


    By Sierra Instruments, Inc.

  • Particulate Matter Testing - BG3 Partial Flow Dilution Emissions Sampling - Case Study

    Today, the BG3 Elite Series for partial flow dilution (PFD) is the standard used to test and measure particulates by such industry giants as Caterpillar, John Deere, Perkins, JCB, and even the US EPA, and has found a global installed base of hundreds of units.  On January 7, 2011, ...


    By Sierra Instruments, Inc.

  • IVF Cryopreservation and Safe Handling Practices

    Couples that want to have a baby but have not been able to conceive naturally are drawn to invitro fertilization (IVF) treatments. In an IVF treatment, several eggs are fertilized at once, which creates multiple embryos. While more than one embryo may be implanted, to spur the odds of pregnancy, there are inevitably some unused embryos. The remaining embryos may be preserved cryogenically, for ...

  • FTIR Gas Analyzer Helps Pöyry in QAL2 and AST Compliance Measurements

    Several EU directives and national laws in the European countries set requirements for continuous monitoring of flue gas emissions. Pöyry helps industrial plants meet stringent environmental standards by offering emission measurement services like compliance measurements, for example. We spoke to measurement team manager Paula Juuti at Pöyry about her work with emissions ...


    By Gasmet Technologies Oy

  • Detection of abnormal wear particles in hydraulic fluids via electromagnetic sensor and particle imaging technologies

    Abstract Particle imaging, electromagnetic, ferrographic, and spectroscopic methods were used to evaluate hydraulic oil samples collected from machines known to be generating abnormal wear particles. Analytical ferrography confirmed the presence of large reworked ferrous particles and small rubbing wear particles in the oil samples. ICP emission spectroscopy was limited in its ability ...


    By Spectro Scientific

  • Beyond Karl Fischer: Titration Methods

    Almost every industry is concerned about water concentration levels in some way. Food and pharmaceuticals automatically come to mind, but fuel, explosives, agri-chem, and polymer processing businesses (to name a few) all rely on moisture content as a critical quality attribute. Karl Fischer titration (KFT) is the best-known technique for determining water levels in samples, and it is supported ...


    By Spectro Scientific

  • National Environment Management Authority (NEMA) compliant medical waste incinerators in Kenya - Case Study

    Providing advanced solutions to treating Medical Waste whilst complying with all government environmental regulations. The correct solution for treating Kenyas' medical waste Ensuring all international emissions guidelines are adhered to is essential for safe destruction of Medical waste. We recently completed the commissioning of two of our Medical Incinerators ...

  • CEMS II e Increases Flexibility in Continuous Emissions Monitoring

    Gasmet’s vision is to live on a planet with less emissions. To fulfill this mission, we manufacture reliable and complete continuous emissions monitoring systems. We specialize in two different kinds of monitoring systems: 1) ...


    By Gasmet Technologies Oy

  • Pepsi Is Launching the First Ever “Nitro Soda”

    Nitrogen-infused or nitro beverages have been among the biggest trends in the beverage industry. There's been no shortage of nitro cold brew coffees and nitro beers, but never a nitro soda—until now, with the launch of Nitro Pepsi. The new beverage was sampled at the 2019 Super Bowl and while you won't find it on tap just yet, here's what you can look forward to. Introducing Nitro ...

  • Groundbreaking climate change research at Jungfraujoch Research Station - Case study

    Axetris MFCs used for CO2 isotope tracking Swiss Federal Laboratories for Materials Science and Technology (Empa) is using Axetris mass flow controllers (MFCs) in its research laboratory at the Jungfraujoch High Altitude Research Station, located at the "Top of Europe." Axetris MFCs were chosen to fulfill the strict demands of repeatability and stability for enabling high-performance ...


    By Axetris AG

  • Quality Leader in Thermal Analysis depends on Axetris Mass Flow Solutions - Case study

    Pushing the limits of Thermal Analysis using Axetris MFCs An international quality leader for Thermal Analysis solutions relies on Axetris mass flow controllers (MFCs) and has done so for many years. Axetris mass flow solutions help maximize performance while using analysis techniques such as Thermogravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC). ...


    By Axetris AG

  • UK Health and Safety Laboratory samples with Axetris mass flow controllers - Case study

    Proficiency testing ensures workplace & consumer safety The Health and Safety Laboratory (HSL) runs a state-of-the-art atmosphere generation system for recreating polluted atmospheres and accurate loading of standards of hazardous materials such as VOCs. These standards are used for conformity testing by participating laboratories as part of proficiency testing schemes. Axetris' mass ...


    By Axetris AG

  • Mass flow controllers for Regulating gas flow rates - Case study

    For automatic or manual control, Voegtlin’s thermal mass flow controllers allow high precision regulation of gas flow rates and consistent quality of gas mixtures. The fast control response minimises the setting time. CMOS Sensor Technology By using high-precision CMOS technology (semiconductor sensors) Voegtlin’s thermal measurement and control devices ...


    By iCenta Controls Ltd

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