sample bag Articles

  • Sampling VOCs with Supel™-Inert Film Gas Sampling Bags

    Sampling VOCs with Supel™-Inert Film Gas Sampling Bags with Thermogreen™ LB-2 Septa as an Alternative to Tedlar® For 10 years, Supelco has provided our customers with high quality Tedlar gas sampling bags. Recently, we expanded our gas sampling bag line to include an alternative to Tedlar for sampling VOCs that incorporates our low-bleed Thermogreen™ LB-2 ...


    By MilliporeSigma

  • Stability of Volatile Sulfur Compounds (VSCs) in sampling bags – impact of temperature

    Volatile sulfur compounds (VSCs) are a major component of odorous emissions that can cause annoyance to local populations surrounding wastewater, waste management and agricultural practices. Odour collection and storage using sample bags can result in VSC losses due to sorption and leakage. Stability within 72 hour storage of VSC samples in three sampling bag materials (Tedlar, Mylar, Nalophan) ...


    By IWA Publishing

  • Ambient Air Sampling Methods

    Pollutants are nothing but any substance that may present in an atmosphere in such a concentration that it may harmful to surrounding, living organism or human being. Sampling and analysis of air pollutants is known as Air quality monitoring and it is major part of environmental monitoring. There are many advanced types of ambient air Sampling methods. we will learn here only which are most ...


    By Perfect Pollucon Services

  • Ammonia diffusion through Nalophan™ bags

    The aim of the work is to verify the diffusion rate of ammonia through the Nalophan™ film that constitutes the sampling bag, considering storage times ranging from 1 to 26 h. The ammonia decay over time was evaluated using gas-chromatography for the quantification of ammonia concentration inside the bag. The research assesses the roles of both of ammonia and water concentration gradients ...


    By IWA Publishing

  • Managing Odour Sample Degradation through On-Site Olfactometery and Proper Sample Transportation and Storage

    Degradation is inherent part of odour sampling and olfactometery analysis. There are many techniques that can be deployed in order to minimize sample degradation, such as nitrogen-based pre-dilution and sealed transportation vessels. Despite the best efforts to keep the volatilization at bay - sample degradation has forced European and American standards to implement a thirty (30) hour expiration ...

  • ITRC position paper for passive diffusion sampling, 2002

    This document is intended to facilitate the use of polyethylene diffusion bag (PDB) samplers for long-term monitoring (LTM). The guidelines presented in Sections 2 and 3 relate to appropriate implementation, data interpretation, and regulatory issues of concern. Although diffusion samplers can be useful for many different activities and have membranes composed of various materials, this ...


    By EON Products Inc.

  • ITRC technology overview of passive sampling technologies

    This document presents technical overviews of 12 passive sampling technologies. It describes each technology’s basis of operation, intended applications, advantages, limitations, and development status. Contacts for additional information are provided. This overview is an outgrowth of interest and information generated in preparation of the ITRC Technical and Regulatory Guidance for Using ...


    By EON Products Inc.

  • Oil Sampling Best Practices (Part 2)

    Understanding Dynamic Particle Equilibrium in Closed Loop Systems Dynamic Equilibrium Condition (DEC) is defined as a steady state condition where the normal wear rate in a machine results in no net gain or loss of particles. ...


    By Spectro Scientific

  • ITRC technical regulatory guidelines for passive diffusion sampling, 2004

    Polyethylene diffusion bag (PDB) samplers are low-density polyethylene bags containing deionized water, used to collect water samples in groundwater wells for laboratory analyses of volatile organic compounds (VOCs). PDB samplers are passive devices, relying on the movement of groundwater from the aquifer or water-bearing zone through the screen or open interval of a well. VOCs in groundwater ...


    By EON Products Inc.

  • White Paper - Uniqair, Purdue University Odor Lab Develop Odor Sampling Procedure

    New Odor Sampling Procedure for high humidity air flow from dryers/coolers A new odor sampling procedure with nitrogen dilution has been developed by Uniqair and Purdue University’s odor lab for odor evaluation of high humidity airflow from petfood dryers, extruder air conveyer (wet cyclones) and coolers.  The sample bags will be pre-filled with a specific quantity of ...


    By Uniqair Technologies Ltd.

  • U.S. troops get boost from soil sampling equipment supplier

    Top of the line soil sampling equipment isn’t the only thing that AMS produces. They also produce smiles on the faces of United States Troops overseas. The holidays can be lonely for U.S. troops, but it can also be immensely joyful when they know they have love and support from back home; not just from friends and family, but from complete strangers.  Rick Vollweiler, ...

  • EPA studies identify techniques for critical leak testing prior to soil-vapor sampling

    Researchers at EPA’s National Risk Management Research Laboratory (NRMRL) in Ada, OK, are developing quality assurance (QA) measures for soil-gas and sub-slab sampling methods that help differentiate contaminant vapors due to vapor intrusion from background sources. Recent research focused on measures to identify leakage of ambient air into conventional vapor probes, which can significantly ...

  • Effect of storage conditions on physico-chemical properties and fatty acid ratio, C18:2/C16:1 of blended fat

    Hydrogenated palm kernel oil (HPKO) blended with butter in ratio 3:1 and 3:2 were investigated for different physicochemical properties and fatty acid ratio, C18:2/C16:0. The antioxidant treated samples and the control samples, packed in LDPE bags, PET and glass jars were stored at room and refrigerating temperature for ten months. Storage of control samples in LDPE bags at room temperature was ...


    By Inderscience Publishers

  • Plugging `hot` pipes in extreme environments

    Some of the world's most intricate infrastructure is found in power plants, chemical plants, refineries, and other factories that use and combine industrial chemicals. The piping for fuel, chemical transport, water supply, and cooling needs is typically very complex and subject to high temperatures and pressures. And since plants are harsh environments, it's a given that piping needs regular ...


    By Petersen Products Company

  • Changes in geotechnical properties of Municipal Solid Waste (MSW) in bioreactor landfill with degradation

    The objectives of the research described in this paper are to: study the composition of fresh Municipal Solid Waste (MSW); study the effects of decomposition on physical characteristics of MSW in bioreactor landfill. Initially, composition of the fresh MSW constituents was determined based on 14 bag MSW samples. Then, four small-scale bioreactor landfills were simulated in laboratory and samples ...


    By Inderscience Publishers

  • Dust collection dilemma: ostrich egg dust

    Rick Peil from the Toolking Superstore was presented with an interesting dust collection dilemma. Tamera Seevers creates unique fine art out of ostrich eggs (www.tameraseeversstudio.com). Carving and finishing the ostrich eggs takes up to three months and creates a very fine, ostrich egg dust. Her problem was with her 1-micron bag on the dust collection system, the dust was still escaping into ...


    By American Fabric Filter Co

  • Are your field soil screening procedures providing you with practical and accurate information?

    Untitled Document Environmental consulting activities frequently require that on-the-spot decisions be made in the field concerning the ...


    By Enviro-Equipment, Inc.

  • Decoy Country Park Newton Abbot

    Location: Newton Abbot Service: Postal Service Project Description:  Envirochem carries out the analysis of environmental ...

  • Comparing Field Portable X-Ray Fluorescence (XRF) To Laboratory Analysis Of Heavy Metals In Soil

    ABSTRACT Field portable x-ray fluorescence (XRF) continues to gain acceptance as a complement to traditional laboratory testing of metal contaminated soil. The quality of data produced by field XRF varies with site conditions, soil composition, and sample preparation. Quality assurance protocols for the field method usually require that a number of field samples be split and sent to a ...

  • The Aerox®-Microtester …A unique tool!

    The smallest version of the Aerox cold plasma injection technology fits in a suitcase.This so called Aerox®-Microtester offers a unique test device to be used by the Aerox-Sales Team to demonstrate the customers the working of the Aerox®-Technology on-site. The demonstration can be carried out within two hours. All what is needed is the smell and an internal odour panel using their noses. ...


    By Aerox B.V.

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