laboratory water Articles

  • Oxygen Monitors now Required for Nitrogen, Argon, Helium, and CO2 use in Denver

    The Colorado city of Denver recently passed a new law that requires facilities that use insert gas to install oxygen deficiency monitors wherever these gases are used in excess of 100 pounds. Learn what the new law requires from businesses and how an oxygen sensor protects your employees, your business, and your peace of mind.  What Denver's New Law Requires  The law ...

  • United States Coast Guard (USCG) Implements Handheld Technology for Onboard Oil Testing in New Cutters - Case Study

    With a motto of “Always Ready,” the United States Coast Guard (USCG) has 11 missions specified by law including drug and migrant interdiction; ports, waterways and coastal security; fishery patrols; search and rescue; and national defense. The USCG’s newest ships include 22 Fast Response Cutters (FRCs) which recently entered service, and 36 more are currently on order. ...


    By Spectro Scientific

  • Quality assurance and Quality control technical note

    Introduction For almost 50 years HYDROLAB products have provided dependable sensor technology in a multiple parameter instrument for montioring essential indicators required for assessing water quality in natural waters. Useable data are the lifeblood of any environmental water quality monitoring program and variation in measurement processes impairs the quality of the data that water ...


    By The OTT Hydromet Group

  • Laboratory validation of an ozone device for recreational water treatment

    Obtaining an accurate assessment of a treatment system's antimicrobial efficacy in recreational water is difficult given the large scale and high flow rates of the water systems. A laboratory test system was designed to mimic the water conditions and potential microbial contaminants found in swimming pools. This system was utilized to evaluate the performance of an in situ ozone ...


    By IWA Publishing

  • WinLims for environmental laboratories

    There are many different types of environmental laboratories testing diverse and varied samples, such as soils, waters, effluents, emissions, micro swabs, etc. A large proportion of these laboratories operate on a contract basis servicing numerous client companies, whilst others would be internal laboratories providing environmental analysis for the company site or group sites. To be able to ...

  • Laboratory Filter Paper Suction Measurements

    Results of filter paper measurements for both matric and total suction values are reported for a sand, silt, and clay. Calibration curves for the matric and total suction are given for the filter paper used in this study, and comparisons with the results of several other researchers are made. For low suction values, the matric suction is more easily measured than the total suction using the ...


    By ASTM International

  • Laboratory evaluation of a water-treatment sequence using Moringa oleifera seed coagulant

    A water extract of Moringa. oleifera seed was applied to a treatment sequence comprising coagulation-flocculation-sedimentation-sand filtration. Model waters (kaolinite suspensions) of turbidities 10, 100, 300 and 700 NTU were prepared. For the 10 NTU water, the optimum dose was only evident when sand filtration was incorporated into the treatment sequence. For the higher water turbidities ...


    By Inderscience Publishers

  • Chitorem chitin complex laboratory microcosm test for mine inuenced water treatment

    Background Laborator y microcosm tests performed at Penn State Univer sity to determine the e ectiveness of CHITOREM in treating mine in¬uenced water (MIW). MIW collected from Kittanning Run in Altoona, PA exhibiting pH of 3.21, acidity of 192 mg/L and alkalinity of 0 mg/L. CHITOREM ch itin complex compared with mushroom mulch and sodium lactate as potential ...


    By JRW Bioremediation, LLC

  • Fate of Salmonella Typhimurium in laboratory-scale drinking water biofilms

    Investigations were carried out to evaluate and quantify colonization of laboratory-scale drinking water biofilms by a chromosomally green fluorescent protein (gfp)-tagged strain of Salmonella Typhimurium. Gfp encodes the green fluorescent protein and thus allows in situ detection of undisturbed cells and is ideally suited for monitoring ...


    By IWA Publishing

  • Laboratory Management - Integrated Sampling the Key to Safe Water Supply

    Leading water suppliers use Laboratory Information Management Systems (LIMS) to integrate the sample collection and analysis process, helping to maximize the efficiency of these programs. Drinking water suppliers around the world face unique challenges: They must deliver the most essential ingredient for life on a grand scale, while also navigating complex issues surrounding public safety, ...

  • Forward osmosis desalination from laboratory to market

    A two-step forward osmosis (FO) desalination process combining both FO and reverse osmosis (RO) systems has been developed by the Centre for Osmosis Research and Applications at the University of Surrey and commercialised by Modern Water plc. In the FO + RO process seawater was used as feed water (FW) and a concentrated aqueous solution was used as a draw solution (DS). By taking ...


    By IWA Publishing

  • Application notes: TOC analysis in a chemical laboratory

    What You Need to Know Analytical laboratories in the chemical industry are routinely tasked with monitoring organics in water across a wide range of applications. For example, organic carbon analysis is being used to: Monitor plant storm water and wastewater Test for condensate system or boiler integrity Enhance cooling and make-up water quality ...


    By GE Analytical Instruments

  • Preparation of Large-Size Laboratory Deposits of Cohesive Soil

    High-quality, large-size cohesive soil deposits can be prepared in the laboratory using the slurry method, which has many advantages for research and calibration purposes. The requirements for such deposits are discussed, and details are presented of the apparatus used successfully to prepare deposits of Cornell clay. Fifteen medium-size deposits (0.6 m diameter by 1.2 m deep) and one large-size ...


    By ASTM International

  • Laboratory analysis demonstrates severity of Ogoniland pollution

    A two year study of the environmental impacts of oil contamination in Ogoniland was one of the most complex on the ground assessments ever undertaken by ALcontrol Laboratories. Conducted at the request of UNEP and the Federal Government of Nigeria, the work involved fieldwork and laboratory analysis.  ALcontrol Laboratories analysed over 4,000 air, soil and water samples collected from ...


    By ALcontrol Laboratories

  • Environmental fate and behavior of acesulfame in laboratory experiments

    Acesulfame is a widely used artificial sweetener. It can be discharged into surface water by domestic wastewater due to its incomplete retention during wastewater treatment. Concentrations may reach up to 10 μg/L for smaller rivers. State-of-the-art analysis allows the determination of acesulfame traces (0.01 μg/L) and thus a potential tracking of the presence of wastewater in riverbank ...


    By IWA Publishing

  • Meeting the Need for LIMS at a smaller laboratory case study

    EMS Inc (Environmental Management Services) offers environmental sample collection, VELAP (Virginia Environmental Laboratory Accreditation Program) accredited laboratory analysis, water and wastewater plant operations, and consulting services to both industrial and commercial clients. By introducing Autoscribe's entry level Matrix Express LIMS (Laboratory Information Management System), EMS Inc ...


    By Autoscribe Informatics

  • On-site Neutralization of Laboratory Wastewater: Northern Territory University

     The Northern Territory University’s Faculty of Science have designed and installed a ‘Neutralization Pit’ as their ‘cleaner production initiative. The primary objectives of the Northern Territory University adopting this form of treatment for the chemical wastewater generated by the Faculty of Science was to: Prevent pollution and eutrophication of the receiving Darwin watercourses as ...


  • How Does a Laboratory Automation Needs Assessment Benefit Laboratory Information Management System (LIMS) Implementation and Operation?

    Many laboratories may have the expertise to translate manual processes and laboratory automation requirements into a detailed specification document for all of the system requirements, features and functions of a LIMS. However, that may not be the best utilization of their resources. In addition, this can be labor intensive and the laboratory personnel may be too close to the project and may not ...

  • Laboratory efficacy and field effectiveness of hollow fiber membrane microfilters used for household water treatment in Honduras

    The Sawyer PointONE™ hollow fiber membrane filter is increasingly promoted for long-term household water treatment in developing countries. Limited data demonstrate PointONE™ microbiological laboratory efficacy and short-term diarrheal disease reduction among users, but household microbiological data is lacking. To compare laboratory and household PointONE™ filter microbiological performance, ...


    By IWA Publishing

  • In situ and laboratory toxicity of coalbed natural gas produced waters with elevated sodium bicarbonate

    Some tributaries in the Powder River Structural Basin, USA, were historically ephemeral, but now contain water year round as a result of discharge of coalbed natural gas (CBNG)‐produced waters. This presented the opportunity to study field sites with 100% effluent water with elevated concentrations of sodium bicarbonate. In situ experiments, static renewal experiments performed simultaneously ...


    By John Wiley & Sons, Ltd.

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