Sampling Pumps Articles

  • Syringe Pumps vs Peristaltic Pumps - Case Study

    Introduction Different applications require a pump, among all the options peristaltic and syringe pumps, are the most suitable. However, selection of the best is always a disjunctive. In general terms, laboratory and industrial process use peristaltic pumps. A user needs to know more about the systems and proper comparison of these technologies. In some cases is difficult to understand ...


    By Chemyx Inc

  • Redi Clean Treatment Case Studies

    This well is unique in the fact that it is only 9 years old. From the date of construction this well produced heavy amounts of sand. Therefore the engineer on record redesigned the well and installed an 8” inner casing, see the drawing for reference. This well has lost production steadily for several years. During the first week of May 2012 this well drew down to the point of surging. ...

  • Pump it up: making single-pit emptying safer in rural Bangladesh

    Safe emptying and disposal of fecal sludge from pit latrines in rural areas has become a priority for the Government of Bangladesh. In this paper, we calculate the volume and characterize the hazards of managing sludge to identify technologies for safely emptying rural single pits. In Bhaluka subdistrict, an estimated 15,000 m3 of sludge is produced annually. Physical, chemical, and microbial ...


    By IWA Publishing

  • Binary vs. Quaternary Pumps: High Pressure Mixing vs. Low Pressure Mixing

    Welcome to the next installment in my series on binary vs. quaternary pumps for liquid chromatography! In my previous post, I discussed how gradients are created as well as the importance of having accuracy and precision in your gradient. ...


    By Waters Corporation

  • Binary vs Quaternary Pumps

    How is a Gradient Created? Any liquid chromatograph is an amalgamation of a certain set of components that delivers to the scientist a monograph of the sample they are analyzing.  Traditionally, an LC system consists of a pump, an injector, a column heater, a detector and even more commonly these days a mass spectrometer or mass detector.  In ...


    By Waters Corporation

  • Strengthening the Weakest Link

    A leading international wastewater instrumentation manufacturer is now using peristaltic pumps from Verderflex as part of the wastewater sampler systems it manufactures. The pumps provide reliable and accurate performance which helps the Hydrocell sampler systems produced by Halifax-based Smart Storm to measure the volume and toxicity of wastewater effluent. As a leading provider of water ...


    By Modern Pumping Today

  • How can I finely control the vacuum applied by my vacuum pump or system?

    Some vacuum pumps or built in vacuum systems do not allow fine control over the vacuum applied. For rough work like vacuum filtration this is not always needed, but for more sensitive work, for example when using a rotary evaporator, application of the correct vacuum level is essential to smooth operation. The new ...


    By Camlab Limited

  • LISST-SL velocity thresholds

    Is there a low velocity threshold for the LISST-SL? Does it need a minimum flow speed in order to sample? What is that? Absolutely! The internal pump in the SL will adjust the intake velocity to match the ambient flow speed in order to make the sample intake isokinetic. However, it is necessary to maintain a minimum pump velocity in order to avoid settling of particles inside the instrument. This ...


    By Sequoia Scientific, Inc.

  • Field application of a planted fixed bed reactor (PFR) for support media and rhizosphere investigation using undisturbed samples from full-scale constructed wetlands

    This study presents a novel method for investigations on undisturbed samples from full-scale horizontal subsurface-flow constructed wetlands (HSSFCW). The planted fixed bed reactor (PFR), developed at the Helmholtz Center for Environmental Research (UFZ), is a universal test unit for planted soil filters that reproduces the operational conditions of a constructed wetland (CW) system in ...


    By IWA Publishing

  • Concentration and solvent recovery of environmental samples in dichloromethane

    Environmental samples are usually extracted with an organic solvent which is then concentrated prior to final analysis. In this short note, initial conditions and evaporation settings for the parallel concentration of samples dissolved in dichloromethane (DCM) having different starting volumes are presented. These settings have been optimized for high analyte and high solvent recoveries. ...


    By BÜCHI Labortechnik AG

  • Pumps in lubricant production

    A major business segment at Hermann Bantleon GmbH is the development, production, and sales of lubricants. At its plant in Ulm, Germany, this company starts with high-quality base oils and produces both universal and customized lubricants according to its own formulas. Customized products are often the best way to meet special requirements in cutting and non-cutting production processes. They can ...


    By ALLWEILER GmbH

  • Casella intrinsically safe TUFF personal air sampling pump and dBadge sound level meter are a hit down under with Australian department of defence

    Following a competitive tender process, the Australian Department of Defence has taken delivery of 180 TUFF personal air sampling pumps and 180 CEL-350 dBadge personal noise dosimeters from Casella CEL (www.casellameasurement.com; 01234 844100), leading global specialist in industrial hygiene and occupational health monitoring equipment. Ronald Azar, ...


    By Casella

  • Sand, surf and septage (Malibu Beach)

    Onsite systems at 16 beaches on Santa Monica Bay, Calif., had exceeded their useful lives. Most were at risk of overflows and required pumping every two weeks, as sand blowing in through corroded cast-iron lids filled them three-quarters full. Monthly water samples taken by the Los Angeles County Department of Environmental Health confirmed intermittent high bacteria counts. Concern for the ...


    By Geoflow, Inc.

  • University of Washington portal - Case Study

    Active Treatment and Wheel Wash Water Treatment In late 2008 construction began on the 3-year Seattle Light Rail University of Washington link connecting the university with downtown Seattle. Because this site drains to Lake Washington and the Montlake Cut the City of Seattle has put extra emphasis on protecting surface water from contaminated stormwater runoff. In fact, the city routinely ...

  • Low Flow Groundwater Sampling Using RotaPump Inertial Lift Pump

    This article tells you how to perform low flow groundwater sampling using a portable, surface-mounted pump with no decontamination required before each use and  no chance of cross contamination between wells. An inertial lift pump moves a dedicated (stored in the well) pumping tube rapidly up and down.  A one-way valve on the bottom admits water on the down stroke and ...


    By RotaPump, Inc

  • Grindex pumps bedrock for more trains

    Dewatering a big tunnelling project demands both reliable dewatering pumps and a well planned sedimentation system. This case study from the Swedish railway project Ådalsbanan shows a good example of this. Ådalsbanan is one of the biggest railway projects in Sweden and comprises investments of 6600 MSEK. It stretches as far as 130 kilometres, from the city of Sundsvall to the ...


    By Grindex Pumps

  • Determination of water quality index by fuzzy logic approach: a case of ground water in an Indian town

    The paper proposes fuzzy logic model that deals with the physico-chemical water analysis of ground water of Chikhli town for determination of Water Quality Index (WQI). The study was carried by collection of ground water samples from about eleven hand pumps located in this town. Ground water quality is studied by systematic collection and analysis of samples. The fuzzy logic is used for the ...


    By IWA Publishing

  • Case Study: Kuusakoski Ltd

    Kuusakoski Ltd is one of the leading recycling companies in the Baltic region. At one of their waste stations a Waterix AIRIT® 200 aerator was installed in the filtration water basin in autumn 2006. The volume of the drainage basin is 6000 cubicmeters and normally the water level is kept at 2000 cubics. The environment is challenging, as there is lots of ammonium nitrogen and chlorides in the ...


    By W-Rix Ltd

  • Residential Vapor Intrusion Evaluation: Long Duration Passive Sampling v. Short Duration Active Sampling

    Abstract Sampling indoor air for potential vapor intrusion impacts using current standard 24-hour sample collection methods may not adequately account for temporal variability and detect contamination best represented by long-term sampling periods. Mr. Henry Schuver of the U.S. Environmental Protection Agency (EPA) Office of Solid Waste staled at the September 2007 Air & Waste Management ...

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