lab filter Articles

  • 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

  • What can I use to filter my mobile phase?

    If you are using mobile phase that contains salts or, generally, any components that are weighed out for its preparation, you will need to filter the solution before using with HPLC or UHPLC. The most common type of filtration is membrane microfiltration. We sell an extensive group of products for this and they are discussed very well in a blog ...


    By Restek Corporation

  • TOC analyser improves lab efficiency

    Leading instrumentation company HACH LANGE is helping a number of key customers save valuable time and costs with its new IL550 TOC-TN analyser. TOC analysis is vitally important in applications ranging from power generation, wastewater, drinking water, surface water and ultrapure water, to agricultural soils, contaminated land and food. HACH LANGE analysers therefore offer a range of options ...


  • How can I make my lab greener? 5 tips to reduce your lab’s carbon footprint

    Many laboratories want to make their operation more environmentally friendly and reduce their carbon footprint. The 5 steps below are a good starting point for simple changes to get closer to being a green lab We’ve been reading the great tips and ideas on mygreenlab.org to reduce the carbon footprint of your lab. Why not try these simple changes to ...


    By Camlab Limited

  • Lab–scale production of biogenic sulphide for metal precipitation in remote areas

    Batch cultures with wheat straw, biomass of Paja Brava (Festuca orthophylla), filter paper, newspaper and beech leaves (Fagus sylvatica) were established to produce sulphide. Sulphide production, sulphate reduction, concentration of Volatile Fatty Acids (VFAs), enzyme activities and Fluorescence in situ hybridisation were determined. Approximately 5 mM of sulphide was produced during anaerobic ...


    By Inderscience Publishers

  • Beta ratios explained and applied to liquid filter selection

    Liquid Filter Beta Ratios: Absolute rated liquid filter selection is tied to the media micron rating, materials of construction, construction design, and particulate removal efficiency filter factor known as its Beta Ratio (Figures 1, and 2). Consider that Engineering and Purchasing usually see absolute rated liquid filter efficiencies from vendor data sheets and quotes listed at 99%, ...

  • Comparing TGA, FTIR and fixed filter infrared analyzers for measuring soot levels in in-service lubricants

    Measuring soot in diesel engine oil has become more important as soot levels get higher due to exhaust gas recirculation. As soot isone of the key indicators for the condition of the oil, diesel engine maintenance programs performing regular soot checks can realize cost savings by extending drain periods and reducing used oil disposal. TGA (Thermal Gravimetric Analysis) is the traditional method ...


    By Spectro Scientific

  • Full Scale Evaluation of UpflowTM Filter - A Catch Basin Insert for the Treatment of Stormwater at Critical Source Areas

    ABSTRACTStormwater runoff from critical source areas, such as parking lots, vehicle fueling and maintenance stations, and public works storage areas, may contain pollutant loadings of hydrocarbons, toxic trace metals, nutrients, pathogens, and/or other toxicants and pollutants that are greater than the loadings of “normal” stormwater runoff (Bannerman, et al. 1993;Pitt, et al. ...

  • VSEP helps meet discharge guidelines, recycles water and improves mine economics

    Since their development as lab filters in the early 1960s, polymeric membranes have grown in the number of uses at exponential rates. Membrane architecture and process design itself has undergone significant advancement. A unique membrane filtration system, known as V✧SEP (Vibratory Shear Enhanced Process), was developed by New Logic of Emeryville California. The technology employs ...


    By New Logic Research, Inc.

  • Circuit Board Manufacturer

    A circuit board manufacturer was having difficulty with copper and zinc in their wastewater stream. The metals come from etching and plating processes at the facility. Integrated Engineers treated the water with IE-061 (a metal precipitant), and Floccin-1105. The photo on the left shows untreated and treated water samples. Note the clarity of the water in the treated sample. The photo on the ...


    By Integrated Engineers Inc.

  • Biological denitrification of drinking water using biodegradable polymer

    The application of Biodegradable Polymer (BDPs), which can serve as biofilm carrier and simultaneously as water insoluble carbon source for heterotrophic denitrification. The external dosing of soluble organic substrate can be therefore avoided and process can be simplified as normal bio-filter. In this paper, the lab-scale experiment was carried out by using the cheap material of PBS, a new kind ...


    By Inderscience Publishers

  • Anaerobic digestion and thermal hydrolysis to reduce production of sludge in WWTPs

    Abstract Mesophilic and thermophilic digestion of primary and activated sludge was investigated in lab scale reactors. Mixed primary and activated sludge was digested in one experiment and activated sludge was digested alone in another. The same gas yield, COD and dry solids reduction was obtained with both mesophilic and thermophilic digestion. However, more dissolved COD was found after ...


    By Cambi AS

  • Pre-coagulation and ultrafiltration of effluent impaired surface water for phosphorus removal and fouling control

    The process combination of in-line coagulation and subsequent membrane filtration is a suitable advanced treatment stage to achieve higher quality standards regarding pathogens and phosphorus in biologically treated wastewater prior to its discharge into sensitive water bodies. In this study a membrane pilot installation (capacity of 6 m3/h) was operated in dead-end configuration to investigate ...


    By IWA Publishing

  • Ducted or Ductless Fume Hoods? Is this the real issue?

    Most laboratories will need some form of fume cabinet at some point. The type of cabinet is usually the starting point of the process, and the choice of either ductless or ducted cabinet is made. With the ever increasing need to save money and to be environmentally responsible there are other considerations that need to be explored before a decision can be reached. ...


    By Camlab Limited

  • Case study - CO2 monitoring for Sustainagro

    About the customer Sustainagro Ltd is based in Dundee, Scotland, providing scientific services: chemical and microbial testing of soils, composts and water samples Challenges the customer faced According to former development manager for Sustainagro, Adrian Parker, before the lab had the G100 and could measure in real-time it used a titration method: ...


    By Geotech

  • BHP Billiton - cooling water treatment & solids filtration

    Client: BHP Billiton Douglas CETCO Oilfield Services was requested to supply a water treatment package to treat heavily contaminated water in-line. Consequently CETCO’s equipment had to operate at pressures of up to 15.5 bar and temperatures of 120°C. Following lab bench studies and a technical onsite evaluation, CETCO modified an existing RFV 3000 adsorption skid to carry out this unique closed ...


    By CETCO Energy Services

  • Portable IR Analyzer Provides ASTM Field Test Method for Measuring Soot Levels In Diesel Engine Lubricating Oils

    The InfraCal Soot Meter, from Wilks Enterprise, gives users an approved ASTM testing method for measuring the percent level of soot in diesel engine lubricating oils -- ASTM Method D7686-2011 entitled “Test Method for Field-Based Condition Monitoring of Soot in In-Service Lubricants Using a Fixed-Filter Infrared (IR) instrument.” While there is widespread disagreement on used-diesel ...


    By Spectro Scientific

  • Using UV Fluorescent Technology to monitor for organic pollutants

    For many years the water industry has relied on traditional sampling techniques to monitor water quality in a wide range of environments. Traditional tests such as BOD, PH, Dissolved Oxygen and Ammonia have formed the bedrock of monitoring parameters. There are however other ways to establish water quality and UV fluorescence offers an up to date solution for the investigation of ...


    By Safe Training Systems Ltd

  • Organics Monitoring (TOC)

    Total organic carbon (TOC) testing is the traditional method for determining organic matter in water. However there is a far more practical, affordable and often more useful way to measure organic matter. UV absorbance testing (UVA) is rapidly becoming the preferred method of measuring organics even when the levels of organics being measured are very small. Organic Matter Organic ...


    By Real Tech Inc.

  • Teflon Coating

    The facility coats fiberglass cloth material with PTFE (generic Teflon) and generates approximately 3,500 gallons per week of wastewater. The wastewater has Teflon particles, surfactants, TiO2, yielding total solids up to 40,000 ppm. The majority of the solids are organic in nature. Previous testing done by US Filter followed the generic treatment approach using conventional coagulants (ferric, ...


    By Integrated Engineers Inc.

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