Laboratory Water Articles

  • The climb to the top

    Back in the late 1980’s when market drivers created the cost-effective option of using above-ground circular tanks for industrial activated sludge processes, there were some early valuable lessons for both aeration equipment manufacturers and plant operators. As production plants got away from in-ground basins, one of the more simple innate operational checks became more challenging; ...


    By KLa Systems, Inc.

  • How a contract research lab advanced its polymer characterization capabilities

    Realizing the Advantages of Ultra-High-Performance Size Exclusion Chromatography Compared to GPC Intertek is a global provider of quality and safety services designed to help businesses improve products, assets and processes, overcome market constraints and reduce risks. From auditing and inspection, to testing, training, and certification, Intertek enables customers to meet end ...


    By Waters Corporation

  • Are Fines Reducing Your Hydrocarbon Production?

    Although choosing frac sand can reduce completions design cost initially, there can be short-term and long-term issues: Proppant flowback, proppant embedment, and decreased fracture conductivity, in addition to fines, can negatively affect hydrocarbon production. What are fines? Fines are generated by crushing of proppant, by erosion of sand on the fracture face during treatment, ...


    By Fairmount Santrol

  • Guide To Coolant In Oil Test Methods

    Liquid cooled engines and rotating equipment use glycol based coolants because of their excellent heat transfer abilities. However, glycol based coolants are not desirable at all in lubrication oil itself – Coolant ingression to the lubricant is a particularly nasty contaminant for the variety of damage it can cause. Glycol coolants break down in the high temperature engine environment, ...


    By Spectro Scientific

  • The productive environmental laboratory: BSK Labs boosts efficiency with Metrohm IC

    BSK Labs runs a number of environmental laboratories and service centers along the west coast of the US. A total of 70 employees – including microbiologists, chemists, lab technicians, and support staff – make sure that the 200 to 350 samples that come in every week are analyzed. BSK Labs specializes in potable water chemistry, ground water monitoring, storm water runoff, solid waste ...


    By Metrohm AG

  • Webinar Highlights: Advanced Techniques in Peptide Isolation

    Hello, I’m Andy Aubin, Principal Consulting Chemist at Waters.  Jo-Ann Jablonski, Principal Scientist at Waters, and I recently conducted a webinar that addressed some techniques to make peptide purifications more efficient. We discussed three techniques: Focusing the gradient At-column dilution Temperature control These techniques are easy to ...


    By Waters Corporation

  • 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

  • Rapid start-up of one-stage deammonification MBBR without addition of external inoculum

    In recent years, the anammox process has emerged as a useful method for robust and efficient nitrogen removal in wastewater treatment plants (WWTPs). This paper evaluates a one-stage deammonification (nitritation and anammox) start-up using carrier material without using anammox inoculum. A continuous laboratory-scale process was followed by full-scale operation with reject water from the ...


    By IWA Publishing

  • Benefits of UV Transmittance (UVT) field testing for selling & servicing UV Disinfection Systems

    The Real UV254 ‘P’ series portable meters can be used to measure UV transmittance (UVT) in a number of situations, and are especially beneficial when working with small UV disinfection systems. The following cases outline two situations in which Real Tech’s portable meters are invaluable. Servicing Small UV Disinfection Systems An existing customer is ...


    By Real Tech Inc.

  • Produced Water Case Study

    Challenge Managing the increasing volumes of produced water associated with oil & gas production as well as sourcing water for operations is becoming more challenging for E&P companies. Handling oily wastewaters with high and variable contents of O&G and TSS requires complex and costly treatment trains with conventional technologies. To evaluate akvoFloat ’s ...


    By akvola Technologies

  • The Advantages of a Targeted 2D LC Approach

    Webinar Highlights | Focus on the Relevant: The Advantages of a Targeted 2D Chromatography Approach Hi folks, I’m Daniel Root, Senior Product Marketing Manager for Multidimensional LC Systems at Waters. I recently conducted a webinar that addressed multidimensional liquid chromatography – an exceptional tool for the improvement of characterization and separation of ...


    By Waters Corporation

  • Assessment of inlet efficiency through a 3D simulation: numerical and experimental comparison

    Inlet efficiency is a requirement for characterizing the flow transfers between surface and sewer flow during rain events. The dual drainage approach is based on the joint analysis of both upper and lower drainage levels, and the flow transfer is one of the relevant elements to define properly this joint behaviour. This paper presents the results of an experimental and numerical investigation ...


    By IWA Publishing

  • Multiple-fault detection in water pipelines using transient-based time-frequency analysis

    Pipe faults, such as leakage and blockage, commonly exist in water pipeline systems. It is essential to identify and fix these failures appropriately in order to reduce the risk of water pollution and enhance the security of water supply. Recently, transient-based detection methods have been developed for their advantages of non-intrusion, efficiency and economics compared to traditional ...


    By IWA Publishing

  • Splenic immunotoxicity in developing cane toads (Rhinella marina) from Bermuda

    The impacts of contaminated sediment from 2 ponds in Bermuda on immune function in newly metamorphosed cane toads were examined. In the present study, a partial life‐cycle experiment exposing Gosner stage 20 cane toad tadpoles to pond sediment and laboratory culture water through metamorphosis and into a juvenile state was performed. A basic immunology battery, including general necropsy, ...


    By John Wiley & Sons, Ltd.

  • Experimental observation on factors affecting intrusion volumes during low or negative pressure events

    External water intrusion during low or negative pressure transient events in urban water supply systems may cause pollution and health problems. The volume of intrusion pollutants is one of the significant indicators that can reflect the degree of health risks when a pollution incident occurs. A pilot-scale platform was constructed in this study to simulate intrusion events, which were caused ...


    By IWA Publishing

  • Interlaboratory evaluation of the assessment of arsenic bioaccumulation from field collected sediments using Hexagenia spp. 

    Standardized bioaccumulation testing of aquatic organisms is essential to understanding the impact of historical contamination on the quality of water and sediment. A standardized 28‐day laboratory bioaccumulation method with a freshwater burrowing mayfly, Hexagenia spp., has been developed and internally validated by the Ontario Ministry of the Environment and Climate Change (MOECC). An ...


    By John Wiley & Sons, Ltd.

  • Application of lactic acid bacteria in removing heavy metals and aflatoxin B1 from contaminated water

    In this study selected lactic acid bacteria (LAB, Lactobacillus acidophilus, Lactobacillus rhamnosus, Lactobacillus plantrium and Streptococcus thermophiles) and probiotic bacteria (Bifidobacterium angulatum) were tested for their ability in removing heavy metals (HM) including cadmium (Cd), lead (Pb) and arsenic (As) as well as aflatoxin B1 (AFB1) from ...


    By IWA Publishing

  • Mass Spectrometry Makes Cents for UC San Diego Clinical Laboratory

    “Fast is fine; but accuracy is everything.” The quote is attributed to the famous Wyatt Earp, a sharpshooter and lawman who, with help from his two brothers, sent three outlaws to their graves in the Gunfight at the O.K. Corral in Tombstone, Arizona in 1881. One hundred ...


    By Waters Corporation

  • Matrix express makes Water testing lab more efficient case study

    Matrix Express LIMS allowed The Water Lab to improve its efficiency and provide a faster service by streamlining the processing and management of sample information. The Water Lab (www.lhewaterlab.ie/) is a modern, fully calibrated ISO17025 environmental contract laboratory based in Co. Kildare, Ireland. Providing a wide range of water and waste water testing services, including sampling and ...


    By Autoscribe Informatics

  • 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

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