laboratory testing Articles

  • Axetris Sensor Field Test

    The Axetris LGDs were operated continuously for two years. After intensive laboratory testing, they went out into the field in 2015. Axetris was able to test the functionality of its sensors under real-life conditions thanks to the support of the Linth waste incineration plant. The gas concentration measuring devices called laser gas detectors ( ...


    By Axetris Ag

  • Probiosphere Archaea for methane production study

    The laboratory of wastewater treatment and methane production has been entrusted with the evaluation potential of Probiosphere product Archaea to stimulate biogaz production in anaerobic reactors. Three series of trials have been conducted in order to compare two fresh biomasses from two different Quebec biogaz production plants with the product Archaea: Fresh anaerobic biomass (F1) ...


    By Probiosphere Inc.

  • Performance of shallow footing on geocell reinforced clay bed using experimental and numerical studies, Hegde and Sitharam (2012)

    Construction in soft, weak ground requires treating large areas to a greater depth to ensure the safety of the superstructure. Usually, deep foundation techniques or ground improvement techniques are applied. However, this usually proves to be very costly. Past research has demonstrated that geocell reinforcement increases the load carrying capacity of the foundation bed. It is also a ...


    By PRS Geo-Technologies

  • Laboratory Testing of Chemically Grouted Sand

    The effect of 14 parameters, associated with specimen preparation, handling, and testing, and with soil characteristics, was evaluated experimentally for laboratory prepared specimens of chemically grounted sands. Over 200 unconfined compression tests were conducted, and results are presented and comparisons are made in terms of unconfined compressive strength and tangent modulus at 50% of ...


    By ASTM International

  • Laboratory test system to measure microbial respiration rate

    This study reports a sensible, accurate and economic method for continuous measuring microbial respiration. The measuring principle is an open system, with a continuous air-flow through. Evolved CO2 is absorbed and precipitated as carbonate by a Ba(OH)2 solution, causing a stoichiometrical decrease in ionic strength of the solution and in electrical conductivity. ...


    By Inderscience Publishers

  • Measurements of Elastic Properties of Geomaterials in Laboratory Compression Tests

    Two types of axial loading devices having high and low capacities of axial load, respectively, for use in displacement-controlled compression tests on geomaterials (i.e., natural soils and rocks, and treated soils) in the laboratory are described. They were designed so that the loading direction can be reversed without any noticeable time lag under a highly constant axial strain rate while using ...


    By ASTM International

  • A Thermally Controlled Test Chamber for Centrifuge and Laboratory Experiments

    This note describes a novel approach for the provision of a thermally controlled testing chamber. The main principal of the system is to use a layer of cooled air as an active insulation medium to convect away heat transferred through conventional passive insulation. Results from laboratory floor and centrifuge tests are reported. Observed and predicted performance capabilities of the chamber are ...


    By ASTM International

  • Laboratory Testing Apparatus for Slopes Stabilized by Anchored Geosynthetics

    A laboratory testing apparatus is described for examining slopes subjected to seepage and stabilized by anchored geosynthetics (AGS). The AGS technique can increase the stability of cohesionless slopes such as coastal dunes against surficial erosion and shallow mass failure caused by wave action and seepage forces. In the AGS, a geosynthetic fabric is placed on the face of the slope and tensioned ...


    By ASTM International

  • Materials Testing Laboratory Provides Cutting Edge Contamination Testing Solutions

    Many industries have extremely tight parameters for any contamination of parts that are used in their manufacturing process.  Testing for contamination and quality control is an integral part of these companies’ final products. At EMSL Analytical, the Materials Testing Laboratory has extensive experience in providing highly detailed analytical services to assist manufacturers in ...


    By EMSL Analytical, Inc.

  • Large-Scale Laboratory Permeability Testing of a Compacted Clay Soil

    Constant-head permeability (hydraulic conductivity) tests were performed on samples of a compacted clay soil using a 0.914 by 0.914 by 0.457-m (3 by 3 by 1.5-ft) large-scale, double-ring, rigid-wall permeameter. A naturally occurring silty clay soil was used for the permeability tests. The soil was separated into five different fractions representing five different ranges in precompaction clod ...


    By ASTM International

  • Productivity at the Commercial (or pay per test) Laboratory - White Paper

    Commercial environmental laboratories practice “applied analytical chemistry” by analyzing samples using a list of potential contaminants to determine how much, if any, of the pollutants are there. The data collected may be used by the laboratory’s client to, among other reasons, satisfy a regulatory permit, or for routine monitoring as required by a regulatory agency, such as ...

  • Laboratory tests describing the biological reactivity of pretreated residual wastes

    In Austria as well as in Germany, several ideas have been put forward on how to describe the biological activity of waste. Gas-generation potential, respiration activity and analysis of material groups ('Stoffgruppenanalysen' according to Van Soest, 1963) and eluate parameters like TOC, NH4-N, COD and BOD were discussed. The use of the Incubation Test (developed by the Department of Waste ...


    By ORBIT e.V.

  • Analysis of Hydraulic Gradient Effects for Laboratory Hydraulic Conductivity Testing

    A theoretical model is presented that characterizes the effect of hydraulic gradient on measured hydraulic conductivity in the laboratory. A closed-form equation is derived for the distribution of total head within a hydraulic conductivity test specimen as a function of specimen height, boundary stress conditions, compression index, and change of hydraulic conductivity index. From this ...


    By ASTM International

  • Maize mono-digestion efficiency: results from laboratory tests

    A laboratory experimental campaign was carried out in order to assess the optimal configuration for the anaerobic digestion of a mixture of sweet corn and ensiled maize. Batch hydrolysis tests were conducted at 35 and 55 °C and at four different particle sizes (2, 5, 20 and 50 mm) obtained by manual chopping and sieving. Chemical pre-treatment by 24 h incubation at various acid and alkaline pH ...


    By IWA Publishing

  • Chitorem chitin complex laboratory microcosm test for mine inuenced water treatment

    Background Laborator y microcosm tests performed at Penn State Univer sity to determine the e ectiveness of CHITOREM in treating mine in¬uenced water (MIW). MIW collected from Kittanning Run in Altoona, PA exhibiting pH of 3.21, acidity of 192 mg/L and alkalinity of 0 mg/L. CHITOREM ch itin complex compared with mushroom mulch and sodium lactate as potential ...


    By JRW Bioremediation, LLC

  • Request from the Laboratory in an Oil Refinery to Testing and Analyzing Equipment Manufacturers

    Oil refineries are always required, as social duties, to strictly ensure "safety" and appropriately manage "environment, health and quality" and "stable supply" and, as economic duties, to seek and manage "productivity." The mission of the laboratory of the oil refinery is to support good management, and it is essential for the laboratory to select and manage appropriate testing and analyzing ...


    By HORIBA Europe GmbH

  • Laboratory test report - the effect of scale formation on heat transfer coils

    Background EVAPCO, Inc. recently introduced new Evaporative Condensers and Closed Circuit Coolers which utilize extended surface coils. For decades extended “fin” surfaces have been used on heat transfer coils, often referred to as “finned coils” primarily in an effort to increase dry capacity. However, in the past the fin material was limited to carbon steel tubes ...


    By Evapco Inc.

  • Idaho National Laboratory (INL) Advanced Test Reactor (ATR) - Case Study

    TRA-63 (TRA-605 Warm Waste Line) Failure of Underground 4-Inch Radioactive Warm Waste Pipe and Leakage Discovered During Waste Piping Replacement Construction Project Quick Facts: Pipe Material: Duriron Pipe Pipe Diameter: 4 inches Hole Size: ...


    By InduMar Products, Inc.

  • NMS Laboratories Chooses Qualtrax

    National Medical Services, popularly known as NMS, has chosen Qualtrax as its Quality and Compliance Management Solution. NMS is a world leader in laboratory testing and services, offering testing across many different disciplines and fields. Qualtrax is proud to help them maintain ABFT, ASCLD/LAB International ISO/IEC 17025, CAP ISO 15189, CAP-LAP, and ...


    By Qualtrax Inc

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