astm d4189-07 Articles

  • Death, Taxes . . . and RO Membrane Fouling

    Membrane fouling in reverse osmosis (RO) systems is as all pervasive and inevitable as the common cold. Avoidance is just as hit-or-miss: wash your hands, don't get your feet wet and hope for the best. The many unseen factors influencing whether a person becomes ill parallel the many variables that determine the onset and severity of fouling in a membrane system. Design, operation, and ...


  • Analysis of Lead in Toys

    Important and always current is the analysis of lead in toys for children. Details about the effective sample comminution with FRITSCH Mills. Lead is a toxic heavy metal. Approx. 90 % of the incorporated lead is deposited in the bones and the teeth. Because lead is released very slowly, it will be accumulated over the time in the body. This is dangerous especially for children.  The European ...


    By Fritsch Milling and Sizing

  • Cetane Number and Cetane Index

    This article summarises the findings of an Energy Institute (EI) sponsored Technical Development Project carried out by Cliff Lilley Consultancy, and outlines a review of the suitability of the current cetane index equation used in IP 380 Calculation of Cetane Index of middle distillates by the fourvariable equation (EN ISO 4264) (ASTM D 4737 procedure A**) for calculating Cetane Index (CI), to ...


    By Energy Institute (EI)

  • Asbestos in soil methods

    I wanted to start off this brief technical summary with an item that appeared in the January 2009 Indoor Environment Connections publication… “Asbestos in Soil; The State of the Issue, Tom Laubenthal, Sean Fitzgerald, Alan Seagrave, P.G. In this session, Laubenthal and Seagrave will describe the nature of asbestos contamination in soil. This issue has perplexed the industry for years. What ...

  • PHMSA Proposes Changes to Air Packaging in HM-231A

    The Pipelines and Hazardous Materials Safety Administration (PHMSA) has released a proposed rulemaking to the Hazardous Materials Regulations (HMR) designed to reduce the number of spills of liquid hazardous materials during air transportation. This Notice of Proposed Rulemaking (NPRM), HM-231A, responds to a number of studies on packaging failures by introducing new design requirements, as well ...


    By The Compliance Center (ICC)

  • B-Value Measurements for Granular Materials at High Confining Pressures

    The pore-pressure coefficient, B, is used often to check the degree of saturation of triaxial specimens. A B-value approaching unity is taken to indicate full saturation. The B-value has been measured experimentally at high confining pressures (0.07 to 69 MPa) and found to be substantially less than unity, despite full saturation. Although lowered B-values can be evaluated reliably under ...


    By ASTM International

  • Sample Handling Strategies for Accurate Lead-In-Soil Measurements in the Field and Laboratory

    ABSTRACT The inhomogenous lead-in-soil matrix can present serious obstacles to accurate sample collection and handling. In typical lead-in-soil measurement, particle size related errors in sampling and sample handling often exceed all other sources of error. The magnitude of error can vary widely depending on the particulate nature of the lead contaminant and the effectiveness of control ...

  • Denver Colorado - Harvard Gultch Interceptor - Case Study

    Summary Pipe penetrating radar (PPR), a new pipe inspection technology was used for condition assessment in a 27 inch interceptor in Denver, CO. Metro Wastewater Reclamation District (MWRD), the owner of the interceptor had limited information about the condition of the pipe, so they contacted SewerVUE in order to undertake a multisensory pipe condition assessment that included CCTV, PPR ...


    By SewerVUE

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