Filter Monitoring Articles

  • Field evaluation of a near–real time elemental monitor and identification of element sources observed at an air monitoring supersite in Korea

    Abstract Ambient measurements of elemental species concentrations were made using an online elemental monitor at an air pollution monitoring station in Gwangju, Korea to evaluate the performance of the monitor for near–real time PM2.5 elemental monitoring and identify possible sources of the observed elements. This study also demonstrates the utility of integrating hourly ...

  • 5 Common questions about fluoride in water

    Fluoride in water can be both naturally occurring, or artificially added. In the latter case, this is usually with the objective of aiding oral hygiene in populated areas. Because of its controlled addition in many water systems around the world, it has become associated with a number of different controversies, myths and confusion. Whether you are interested in monitoring fluoride in ...


    By Aquaread Limited

  • What you need to know about diesel exhaust fluid (DEF)

    Sweeper engines have gone through some big changes in the last ten years. And each change has brought additional costs, unfamiliar technology, and new maintenance requirements. One of those changes is the development of Tier 4 Final engines that require diesel exhaust fluid (DEF). ...


    By Schwarze Industries, Inc.

  • Enhesa Enforcement Corner - Issue 4

    Input from Deirdre Perquy, Kengo Okuda, TaoTao Yue, Siyang Song, Jinxin Sui, Riccardo Zorgno, Jade Kennedy, Tjeerd Hendel-Blackford ...

  • Inspection that took 5 months now completed in a single day

    Pure Technologies completes longest single day pipeline inspection to date using PipeDiver® technology. From the Colorado town of Buena Vista, the views of the distant Rocky Mountains are deceptively stunning. Up close, the terrain is hilly, inhospitable and extremely remote. With no roads and little access, this is helicopter, snowmobile and 4-wheel-drive country. As might be expected, the ...

  • 5 Key elements to look for in your etch process

    High wafer throughput Fast etch rates and low clean overheads mean higher tool uptime. Higher uptime means more wafers through your fab Profile control Vertical facets means higher device efficiency – more light out for power in Smooth surfaces Smooth surfaces means less light scattering – more usable ...


    By Oxford Instruments plc

  • Air pollution facts, 5 pollution facts you should know!

    Air Pollution Facts Most Don't Know The air we breathe becomes polluted for many reasons. Emissions from cars and trucks, chemicals from industrial production and that list can go on. Many people consider themselves air pollution experts -it is after all a hot topic and common discussion point that many of us want part of and to demonstrate our knowledge. The best way to tackle air ...


    By Allerair Industries

  • 5 Habits that are bad for your indoor air quality

    School is starting, but warm weather means we are still spending more time outside and keeping windows open as much as possible. However, it doesn’t mean we are safe from poor indoor air quality at home. In fact, indoor air may be more polluted in the summer months than in the wintertime. The reasons include high humidity, pollutant buildup, pesticides and VOCs. There are certain habits in ...


    By Allerair Industries

  • 5 ways to keep asthma in check

    Asthma rates have been on the rise for some time - in 2009 nearly 1 in 12 Americans were diagnosed with the long-term inflammatory disease that restricts airways and makes it difficult to breathe. Other symptoms include coughing, wheezing and chest tightness, and these often get worse when the patient is also fighting a common cold or flu. Asthma affects people of all ages, but especially ...


    By Allerair Industries

  • 5 Processes Where Quality and EHS Convergence Makes Complete Sense

    There are also many overlaps between the quality standards such as ISO 9001, ISO 14001 and EHS standards such as OHSAS 18001. As businesses look to find greater efficiencies by streamlining and integrating business processes, as well as get a better return on their IT investments, quality and EHS convergence makes sense.  Forward-looking businesses are already finding areas ...


    By EtQ, LLC

  • 5 Reasons to Use Eductor Systems for Complex Rehabilitation

    Rehabilitation of dams and levees present complex geotechnical conditions. Contractors require dry, safe and stable working environments in order to carry out an effective rehabilitation project. As our national dam and levee infrastructure ages, the pressure to stabilize construction sites and lower costs will rise. Eductor systems provide a safe, cost-effective dewatering solution for these ...

  • The Modular Building Construction Process: A 5-Step Guide

    Many people are turning to modular buildings as an affordable and efficient space solution. Since they are built off-site in sections, they make it easier for people to get into their building quickly while other aspects are being built around them. They can be used for permanent, long-term, or temporary facilities, making them a popular choice for classrooms, administrative offices, military ...


    By Satellite Shelters, Inc.

  • Understanding 4-20mA Communications

    Imagine this: You’ve got your meter with 4-20mA output setup. Confidently, you flip the switch, turning it on, and then it happens: the readings are off. You’re not getting the output you need. Frustrated, you tinker with it, and still nothing. Now, you’re out of your depth. You need to get this thing working so you can get your application up and running. What are you ...


    By Sierra Instruments, Inc.

  • Fire Station No. 5 Renovations for Seismic Retrofit - Case Study

    Global was subcontracted by Mortenson/Manson, a JV, to perform work on the piles underneath Seattle Fire Station No. 5 along the Elliot Bay Seawall as part of a major seismic retrofit. The scope of work included installing the Denso Sea Shield Series 100 Pile Protection System on 18 steel piles, with the subsequent fabrication and installation of 14 collar bracing assemblies. Containment was ...

  • Effectiveness of silver and copper infused ceramic drinking water filters in reducing microbiological contaminants

    A series of bench-scale experiments were conducted on ceramic filters with various amounts of silver and/or copper nanoparticles fired-in during the manufacturing process. The experiments were designed to determine the efficacy of the filters on the removal of pathogens from drinking water. Escherichia coli and MS2 were employed as non-pathogenic surrogates for pathogenic organisms. ...


    By IWA Publishing

  • Application note issue #5 - Cement Analysis August 2017

    Cement analysis using FP program (Fundamental Parameters) Cement is a blend of several minerals. It is critical to control the elemental composition and properties such as strength, setting, time and color. ED-XRF is being used to analyze the raw components, raw meal, clinker, and the final cement product (Na, Mg, Al, ...


    By Xenemetrix Ltd.

  • 5 ways to bridge the gap between best community engagement practice and actual project experiences

    Community engagement and impact assessment go hand-in-hand. Our core principles prize informed consultation and human rights. Many IAIA members also subscribe to the International Association for Public Participation (IAP2), striving to deliver the golden experience promised at the far side of the engagement spectrum. But any of us who’ve spent time in the field know that the ideal ...

  • Properties of vanadium-loaded iron sorbent after alkali regeneration

    The aim of this research was to investigate the regeneration and reuse of a commercial granular iron sorbent (mainly goethite) when used in vanadium removal. A regeneration rate of 3 M NaOH was the highest (85%) achieved, followed by 2 M NaOH (79%) and 1 M NaOH (68%). The breakthrough curves show that the regenerated material can be reused. The BET (Brunauer–Emmett–Teller) surface area ...


    By IWA Publishing

  • 4 Steps to Improved Performance Verification

    The performance of any measuring device will change over time and must be regularly verified. A new checklist explains how to set up a performance verification plan for weighing equipment that is GMP-compliant and cost-efficient. Download the ...


    By Mettler - Toledo Int. Inc

  • Ask Enhesa Vol. 5

    Featuring contributions from Paula Diaz, Kengo Okuda, Sansanee Dhanasarnsombat, Wassila Nabourema, Elizabeth Tomassetti and Tjeerd Hendel-Blackford ...

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