Laboratory Testing Articles

  • ANSI/AHRI standard 420-2008 for fan and coil evaporators - benefits and costs

    Abstract Fan and coil evaporators as used in the industrial refrigeration industry can be certified for performance per ANSI/AHRI Standard 420-2008, Performance Rating of Forced-Circulation Free-Delivery Unit Coolers for Refrigeration. This paper will explain how the standard works and illustrate the costs related to evaporators that may not meet the performance criteria of the standard. ...


    By Evapco Inc.

  • Laboratory test report - the effect of scale formation on heat transfer coils

    Background EVAPCO, Inc. recently introduced new Evaporative Condensers and Closed Circuit Coolers which utilize extended surface coils. For decades extended “fin” surfaces have been used on heat transfer coils, often referred to as “finned coils” primarily in an effort to increase dry capacity. However, in the past the fin material was limited to carbon steel tubes ...


    By Evapco Inc.

  • Creep not a factor for Geocell load support

    An accurate understanding of creep resistance is essential to proper material selection when using polymers, and in the case of geocells, this science is being misapplied.  The definition of creep deformation is the tendency of a solid material to move slowly or deform permanently under the influence of mechanical stress.  Creep is something that creates fear and uncertainty with all ...


    By Presto Geosystems

  • Hot water boiler system benefits for Sialex®Ring

    There has been and still remains a degree of skepticism associated with a device to seemingly deliver results but with: No-visible power source  No-consumables to be added No by-products generated This sums up Sialex®Ring! Yet this is exactly the fact. Laboratory tests have their benefits, but when a laboratory test tries to re-create the ...


    By Phoenix Ring Manufaktur UG

  • Particle separation from road runoff by a decentralised lamella system – laboratory tests and experiences in the field

    A new decentralised settling system based on the principle of lamella separation was developed for the treatment of road runoff. Two different laboratory test methods, the DIBt (Deutsches Institut für Bautechnik) procedure and our own approach, were applied in order to evaluate the efficiency of the system based on the separation of fine mineral particles and a mixture of mineral and organic ...


    By IWA Publishing

  • 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

  • How HDXRF Helps Volcom Comply with Global Regulations - Case Study

    Volcom, Inc. is a lifestyle brand that designs, markets, and distributes high-quality boardsportsoriented products like clothing, footwear and accessories. As a global company, their restricted chemicals list is a combination and reflection of many international standards. CPSC and Proposition 65 lead the way for many of the chemicals’ lower limit regulations, but Canadian, Chinese, and ...


    By X-Ray Optical Systems (XOS)

  • Case study - SP Fire Laboratory, Sweden

    Fire laboratory at SP Borås uses EnviBat’s Wet Electrostatic Precipitator technology (WESP) since 2007. Extremely low emissions and high availability are key advantages. Project: WetESP for Fire Laboratory Many fire tests are made in full scale. Example for fire tests can be engine rooms, vehicles, store houses, compartments etc. Most of the tests will include ...


    By Envibat AB

  • Developing a Culture of Quality Through EQA

    From specimen collection to delivery of test results, laboratory testing must conform to the highest standards of quality: lives depend on it. Click the image below to read more from APHL. ...


    By Qualtrax Inc

  • Towards a standardization of biomethane potential tests

    Production of biogas from different organic materials is a most interesting source of renewable energy. The biomethane potential (BMP) of these materials has to be determined to get insight in design parameters for anaerobic digesters. Although several norms and guidelines for BMP tests exist, inter-laboratory tests regularly show high variability of BMPs for the same substrate. A workshop was ...


    By IWA Publishing

  • NMS Laboratories Chooses Qualtrax

    National Medical Services, popularly known as NMS, has chosen Qualtrax as its Quality and Compliance Management Solution. NMS is a world leader in laboratory testing and services, offering testing across many different disciplines and fields. Qualtrax is proud to help them maintain ABFT, ASCLD/LAB International ISO/IEC 17025, CAP ISO 15189, CAP-LAP, and ...


    By Qualtrax Inc

  • 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.

  • Satellite analysis to identify changes and drivers of CyanoHABs dynamics in Lake Taihu

    A long-term satellite-based analysis was performed to assess the impact of environmental factors on cyanobacterial harmful blooms (CyanoHABs) dynamics in a typical shallow lake, Lake Taihu. A sub-pixel approach (algae pixel-growing algorithm) was used with 13 years of MOderate-resolution Imaging Spectroradiometer (MODIS) data to evaluate changes in bloom extension, initiation date, duration, ...


    By IWA Publishing

  • Matrix Gemini LIMS at work in a Health Screening Laboratory Case Study

    Eastern Deanery Aids Relief Program (Nairobi, Kenya) has improved data recording, speeded up sample throughput and allowed a direct link to existing electronic patient records by replacing its paper-based laboratory documentation system with Matrix Gemini LIMS. Background Eastern Deanery Aids Relief Program (EDARP) is a non-profit Christian faith-based organization which serves ...


    By Autoscribe Informatics

  • Beyond the Bloodborne Pathogen Standard

    Are you considering the full range of applicable OSHA Standards for your healthcare facility? Healthcare facilities are a highly regulated industry and many hospitals and ambulatory care settings work hard to reach and maintain appropriate accreditation goals. Much focus is placed on patient safety and the myriad of other quality measures healthcare facilities are required to meet. ...


    By Antea Group - USA

  • Using an inter‐laboratory study to revise methods for conducting 10‐ to 42‐d water or sediment toxicity tests with Hyalella azteca

    Studies have been conducted to refine USEPA, ASTM, and Environment Canada standard methods for conducting 42‐d reproduction tests with H. azteca in water or in sediment. Modifications to the H. azteca method include better defined ionic composition requirements for exposure water (i.e., >15 mg/L of chloride and >0.02 mg/L of bromide) and improved survival, growth and reproduction with ...


    By John Wiley & Sons, Ltd.

  • Car emissions: taking tests out of the lab and onto the road

    Every year 430,000 Europeans die prematurely due to air pollution. One of the main sources is road vehicles emitting nitrogen oxides (NOx), including poisonous nitrogen dioxide. Following the Volkswagen scandal, in which the company admitted cheating emission test in the US, Parliament and the Council are considering to update existing emission rules to ensure tests are closer to real driving ...


    By European Parliament

  • Macrolide antibiotics removal using a circulating TiO2-coated paper photoreactor: parametric study and hydrodynamic flow characterization

    The present work investigates the photocatalytic degradation efficiency of biorecalcitrant macrolide antibiotics in a circulating tubular photoreactor. As target pollutants, spiramycin (SPM) and tylosin (TYL) were considered in this study. The photoreactor leads to the use of an immobilized titanium dioxide on non-woven paper under artificial UV-lamp irradiation. Maximum removal efficiency was ...


    By IWA Publishing

  • Scottish snow cover dependence on the North Atlantic Oscillation index

    Forecasting seasonal snow cover is useful for planning resources and mitigating natural hazards. We present a link between the North Atlantic Oscillation (NAO) index and days of snow cover in Scotland between winters beginning from 1875 to 2013. Using broad (5 km resolution), national scale data sets like UK Climate Projections 2009 (UKCP09) to extract nationwide patterns, we support these ...


    By IWA Publishing

  • Selection of food combinations to optimize survival, growth, and reproduction of the amphipod Hyalella azteca in static‐renewal, water‐only laboratory exposures

    While standardized sediment toxicity testing methods have been developed for the amphipod Hyalella azteca, no standardized chronic water‐only toxicity testing methods have been established. Furthermore, optimal feeding and water quality conditions for culturing and toxicity testing with this species remained unclear. Our objective was to determine the food or combination of foods that best ...


    By John Wiley & Sons, Ltd.

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