sampling system Articles

  • Train derailment prompts contaminated land investigation - Case study

    On March 30th 2015 a long freight train, transporting a variety of goods including lumber and chemicals, wound its way through the state of Mississippi. At around 5pm, part of the train failed to negotiate a curved portion of the track in a rural area near Minter City, resulting in the derailment of nine railcars, one of which leaked chemicals onto agricultural farmland and woodlands. Emergency ...


    By Gasmet Technologies Oy

  • Automated Consignment Sampling Systems

    Introduction The following is a case study where consignment sampling has been implemented at a UK coal fired power station. Bias-Free Sampling The production of consistent and repeatable ‘bias-free’ samples is not possible but all international sampling standards give precise limits within which systems can be considered as being ...


    By Eriez Magnetics Europe Ltd

  • Use of Diaphragm pumps in Sampling systems

    INTRODUCTION Sample system design can take many forms, influenced by factors including cost, size, maintenance, source conditions, and analyzer requirements – to mention a few. The following discussion takes into account the operating characteristics of a diaphragm pump, and choices that will improve system performance, reduce measurement errors, and lower pump maintenance. Illustrated below are ...


    By Air Dimensions Inc

  • Oil Sampling Best Practices

    Obtaining a representative oil sample from a closed loop lubrication system is essential to any good oil analysis program. As oil analysis programs become more standardized for routine monitoring, especially within equipment warranty support programs, equipment makers provide more sampling points on new equipment. These ...


    By Spectro Scientific

  • Technical Bulletin: Multilevel Sampling

    The topic of this CL:AIRE Technical Bulletin is multilevel sampling systems for characterising contaminated groundwater. Contaminated groundwater can present considerable problems for landowners: it can occur at significant depth, sources of the contamination are not often obvious, it can migrate from one property to another, and groundwater flow directions can be altered due to seasonal ...


    By Solinst Canada Ltd.

  • Area Monitoring: Diffusion Sampling

    Indoor and outdoor gas hazards that exist in open areas are usually monitored using diffusion-type sensors. A diffusion sensor has no active sample-drawing system; diffusion sensors rely on the ambient air movement and pressure to deliver the sample to the sensing element. Diffusion-type sensors are a reliable and cost-effective way to monitor open area gas hazards. When installing diffusion ...

  • Biodegradation Tests for Wastewater Samples

    Biodegradation Tests for Wastewater Samples Biodegradation tests usually involve comparison of the oxygen uptake of a test sample – or gas production for anoxic or anaerobic tests – to that for a readily biodegradable control substrate (usually acetic acid, ethanol, or aniline). While biodegradation characteristics can vary among chemical types and wastewater sources, typical patterns are shown ...


    By Challenge Technology

  • Decontaminating Groundwater Sampling Devices

    These studies are the second part of a two year project that examines decontaminating groundwater sampling devices. In the first year, the efficiency of various decontamination protocols was tested using small test pieces of materials that are commonly used in groundwater sampling devices. Those tests showed that a hot detergent wash and rinse followed by hot air drying (105°C) was the most ...

  • Sample extraction kit user’s guide

    Intended Use This extraction kit is for use with the appropriate immunoassay test kit. Each Sample Extraction kit contains the materials necessary to process twelve (12) soil or wipe samples. Test Principles The reagents contained in the Sample Extraction kit have been optimized for fast, efficient removal of compounds from soil or surfaces and convenient ...


  • Ground Water Sampling - A Workshop Summary

    Monitoring purposes have evolved in the past decade reflecting an increasing emphasis on assessment and remedial action performance over detection monitoring. The recognition of many potential contamination sources as well as the regulatory inclusion of a large number of sites in need of investigation have spurred this evolution in practice. New more efficient methods and tools for ...

  • Air Sampling During NPP Accident

    There has been considerable interest recently generated regarding emergency air sampling protocols as a result of the Fukushima accident in Japan. A major concern involving air sampling requirements is the accurate determination of gaseous-radioactive iodine species emitted from the NPP to the environment as a result of an accident. During normal NPP operation gaseous radioactive iodine ...


    By F&J Specialty Products, Inc.

  • Setting the standards for headspace sampling by PID

    The responsiveness of PIDs to virtually all VOCs has seen them become the accepted tool for initial site entry assessment, ensuring optimal detection of unknown and often toxic or hazardous chemicals found at hazardous waste sites and chemical emergencies. The speed and accuracy of modern PID equipment means that many worker and community safety concerns during initial and ongoing operations can ...


    By Ion Science Ltd.

  • Ground Water Sampling for Metal Analyses

    The Regional Superfund Ground Water Forum is a group of ground-water scientists, representing EPA’s Regional Superfund Offices, organized to exchange up-to-date information related to ground-water remediation at Superfund sites. Filtration of ground-water samples for metals analysis is an issue identified by the Forum as a concern of Superfund decisionmakers. Inconsistency in EPA Superfund ...

  • Sample System Best Practices for Water and Hydrocarbon DP Applications

    Abstract Sampling techniques for BTU and moisture measurements are well understood but applications beyond the routine requires additional attention to detail. Two such applications are the subject of this paper. The first is the measurement of low level moisture (1 – 1,000 ppbv) for cryogenic processes. Measuring moisture below 1 ppm is an entirely different world from the traditional ...

  • Isolate & sample up to 7 zones in one borehole

    CMT Multilevel Systems isolate and monitor up to seven discrete zones in one borehole; monitor 7 zones in the 1.7" (43 mm) System; 3 in the narrow 1.1" (28 mm) System. Both options are low cost. The single tube design makes them fast and easy to drill and install in one day. System flexibility allows port locations and monitoring strategy to be finalized right on site. CMT wells are ideal for ...


    By Solinst Canada Ltd.

  • Case study - Multilevel sampling and monitoring, Maryland, USA

    Challenges Volatile Organic Compounds contaminated the groundwater posing a risk to nearby private water supply wells. The traditional approach of drilling and sampling multiple boreholes did not provide adequate data to characterize groundwater flow and contaminant migration in the complex fractured bedrock. Solution Westbay System* was installed ...


  • Industrial Hygiene: Quality Assurance In Air Sampling and Analysis

    Industrial hygiene is the recognition, evaluation, and control of chemical, physical, biological, and ergonomic stresses in the workplace. Of the stresses listed, chemical stresses in the form of air contaminants are the most common. Air contaminants, their PELs and TLVs, and how to sample for them, is Industrial Hygiene 101 for most industrial hygienists. However, as simple as sampling and ...


  • The 10 Key Factors in Selecting a Stack Sampling Firm

    Summary: This document is a summary of the key factors that you should take into consideration when hiring a stack testing firm.This has been prepared in conjunction with the ASTM criteria for standard practice of testing companies.The ASTM criteria has been supplemented, based on 125 years of direct testing experience, which is the combined years of experience of the individuals that contributed ...

  • Determination of protein in wheat flour samples - Case Study

    Customer: Grain Quality Testing Laboratory, PARC, Pakistan GQTL is a part of Pakistan Agriculture Research Council under the Federal Ministry of Food Security and Research, Govt. of Pakistan. The laboratory is involved in R&D and testing activities related to grain quality and contaminant residues by means of validated instruments. Application: Protein in wheat ...


    By BÜCHI Labortechnik AG

  • Is the Rotameter Ready for Retirement in Air Sampling/Monitoring Applications?

    The variable area rotameter has been the primary tool utilized for determination of flowrates passing through the air circuitry pathway of air sampling or air monitoring systems for many years. In air sampling applications a pollutant is captured on a collection medium (filter paper, charcoal cartridge, etc.) and taken to a laboratory for determination of the quantity of pollutant on the ...

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