Monitoring & Testing 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

  • Managing livestock diets to reduce greenhouse gas emissions

    Scientists in South East Asia have been measuring greenhouse gas (GHG) emissions from goats and cattle in a series of research projects investigating the effects of different feeding regimes. In each case, the eructed, or belched, emissions from each animal were measured with a ...


    By Gasmet Technologies Oy

  • EPA Proposes TSCA CDR Revisions and Update to Small Manufacturer Definition for TSCA Section 8(a)

    On April 12, 2019, the U.S. Environmental Protection Agency (EPA) released a proposed rule that would amend the Toxic Substances Control Act (TSCA) Section 8(a) Chemical Data Reporting (CDR) requirements and the TSCA Section 8(a) size standards for small manufacturers. The current CDR rule requires manufacturers (including importers) of certain chemical substances listed on the TSCA Chemical ...


    By Bergeson & Campbell, P.C.

  • Recent Federal Developments

    WEBINAR -- FIFRA Hot Topics In Pesticide, Biocides, And Other Agricultural Chemicals Regulation And Litigation, April 24, 2019, 1:00 p.m. - 2:00 p.m. (EDT): Bergeson & Campbell, P.C. (B&C®) is pleased to present the complimentary webinar “FIFRA Hot Topics in Pesticide, Biocides, and Other Agricultural Chemicals Regulation and Litigation.” ...


    By Bergeson & Campbell, P.C.

  • Pushing Water Reuse to The Extremes

    Large-scale water-reuse treatment plants have had a sustainable impact in populated areas where the volume of water to be treated and reused in a concentrated area makes them practical. Today, the flat-sheet membrane aerated biofilm reactor (MABR) technology that is delivering high-quality wastewater treatment to remote locations is poised to realize the promise of sustainable water reuse in ...


    By Fluence Corporation

  • How do I choose audit filters for my opacity monitor?

    Ongoing quality assurance is important for any piece of measuring equipment. From a voltmeter to a spectrophotometer, calibration checks are needed to demonstrate that it is continuing to function within its design specification. An opacity monitor is no different, and the usual method for verification is to perform a calibration error check using traceable audit filters. These are neutral ...


    By AMETEK Land

  • Micro Pulse LiDAR: A Critical Tool for Emissions Source Detection

    Micro Pulse LiDAR remote sensing data are used to calculate a highly accurate Planetary Boundary Layer (PBL) height to improve plume models that help assess emissions sources. Poor air quality is a growing health issue that has a negative impact on the quality of life for millions of people. To help alleviate this serious problem, scientists at Bubbleology Research International (BRI) have ...

  • Mining Emissions Effectively Monitored with Micro Pulse LiDAR Technology

    Mining operations include blasting, excavating, scraping, and sifting large amounts of dirt. These activities create dust and other emissions that are transported by air currents to surrounding areas. It is easy to say that dangerous particulate matter (PM) generated by mining should be monitored and kept to a minimum; however, it is very challenging to measure the levels of contaminants in the ...

  • Supercooled Liquid Water is Hazardous to our Health!

    What is Supercooled Liquid Water? Supercooled Liquid Water (SLW) refers to water droplets in a cloud that can stay in a liquid state at below freezing temperatures. If an airplane flies into these SLW droplets, icing on the wings and airframe can occur. SLW droplets larger than 30 microns create the biggest hazard for aircraft because they don’t freeze immediately, allowing them ...

  • Multiple Instruments Work Together for a Better View of Air Quality

    Accurately identifying and quantifying particulate matter (PM) in the atmosphere is key to determining air quality. Researchers are particularly interested in PM that have a diameter of less than 2.5 micrometers because they are believed to contribute to heart and lung disease in humans and animals. These tiny particles are invisible to the naked eye and originate from power plants, fires, and ...

  • Researchers are Advancing Science Using Micro Pulse LiDAR Technology

    There are so many examples of interesting research using Micro Pulse LiDAR (MPL) technology it is difficult to decide on my favorites; however, I have chosen to highlight the following two papers because these applications for the MPL and MiniMPL address problems that are very important to global health. I’ve created a summary of each report and provided the citation in case you are ...

  • Top 5 Differences between Micro Pulse LiDAR and Ceilometer Technology

    If you are evaluating backscatter LiDAR sensors for measuring aerosols, cloud vertical structure, and planetary boundary layer (PBL) heights, what factors should you consider in your comparison? It really comes down to a choice between the traditional analog technology used in ceilometers and the more recent advanced technology found in Micro Pulse LiDAR (MPL) sensors. To select the best tool ...

  • Micro Pulse Lidar: Perfect Tool for Atmospheric Research

    Micro pulse style lidars are active remote sensing tools proven to be highly useful in atmospheric research. This style of backscatter lidar has been around for decades; however, incremental improvements in photon counting, sensitivity, polarization, optical filters, coatings, and precision machining of each element support increasingly accurate analysis. Each iteration of the ...

  • Acid Protease Enzyme

    Definition of Enzyme Activity1g solid enzyme powder (or 1mL liquid enzyme), at 40 C, pH 3.0 (disodium hydrogen phosphate — citric acid buffer), hydrolyzes casein and produces 1ug tyrosine within 1 minute, that is, a unit of enzyme activity, expressed as U/g (U/mL).Acid Protease Enzyme Powder AppearancePowder: Brown powder, good fluidity 40 mesh screening rate≥90%, dry weight loss ...

  • Important Role of H&L Fiber Optic SCADA Networking Solutions at NT Campus

    The Illinois Institute of Technology campus uses H&L Instruments fiber optic transceivers, and the company's SCADA networking technology, to ensure a resilient, self-healing, and economical microgrid distribution system that represents a model design for replication in both campus and urban communities scenarios. This photo shows a typical Model 570 Fiberoptic Transceiver installation at the ...


    By H&L Instruments LLC

  • Westbay System Reduces Construction Costs by 65% - Case study

    CHALLENGE OCWD had determined that information on the piezometric level and water quality of each aquifer layer was required to optimize management of the recharge, storage, and recovery of groundwater. SOLUTION A cost analysis indicated that for 10 zones through a depth of 1,500 ft, the Westbay System instrumentation would result in a total cost 55% to 65% ...


    By Westbay Instruments

  • Alkaline Protease

    Alkaline Protease Components Acid protease, stabilizer, dispersant Specifications/Physical and Chemical Characteristics of Alcalase Appearance requirements: tan-brown powder preparation, with normal microbial fermentation product smell Enzyme activity: ≥80,000u/g; The pH value of the alkaline protease uses: 9–12, and the optimum pH value is 9.0–10.5. Effect of ...

  • Westbay System Delivers Cost-Effective Groundwater Monitoring in Mountainous Region - Case study

    CHALLENGE After installing a number of traditional monitoring wells at the site, it became clear to the project scientists that more and better data would be necessary to properly characterize the complex groundwater flow system. SOLUTION The high cost (measured in both time and money) of installing conventional well clusters at high-elevation locations caused ...


    By Westbay Instruments

  • Protect Waterworks From Flooding with Wastop Access Case Study

    Problem: Rising sea levels and extreme weather conditions are becoming increasingly common. Wherever we live on the earth, climate change affects us all. One issue that has therefore become increasingly relevant and important in recent years is to protect people and communities from flooding in waste water and surface water systems – which can have disastrous ...


    By Wapro AB

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