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Responding to requests from representatives of the copper industry, ASTM International Committee E01 on Analytical Chemistry for Metals, Ores and Related Materials has developed a new standard, E2575 , Test Method for Determination of Oxygen in Copper and Copper Alloys. The new standard is under the jurisdiction of Subcommittee E01.05 on Cu, Pb, Zn, Cd, Sn, Be, Their Alloys and Related Metals. …
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ASTM International Committee E35 on Pesticides and Alternative Control Agents has begun work on the latest in a series of standards on biofilm. The proposed new standard, WK17813 , Test Method for Quantification of a, Pseudomonas aeruginosa, Biofilm Grown with Low Shear and Continuous Flow Using a Drip Flow Biofilm Reactor, is being developed by Subcommittee E35.15 on Antimicrobial Agents. According to Darla M. Goeres, senior research engineer, Center for Biofilm Engineering, and E35 member, biofilm is defined as microorganisms living in a self-organized cooperative community. These communities, which are embedded in slime and can be…, Pseudomonas aeruginosa, Biofilm Grown with High Shear and Continuous Flow Using CDC Biofilm Reactor; and E2196 , Test Method for Quantification of a, Pseudomonas aeruginosa, Biofilm Grown with Shear and Continuous Flow Using a Rotating Disk Reactor) is that biofilm is grown under low fluid shear close to the air/liquid interface and that the drip flow reactor is a plug flow reactor system, resulting in biofilm that is visible to the naked eye and smooth and slimy in appearance. Biofilm generated in a drip flow reactor could represent those found in a wide spectrum of…
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Biofilm, self-organized communities of bacteria that can have both positive and negative effects in a variety of industries, is the subject of a new ASTM International standard, E 2562 , Test Method for Quantification of Pseudomonas aeruginosa Biofilm Grown with High Shear and Continuous Flow Using CDC Biofilm Reactor. The new standard is under the jurisdiction of Subcommittee E35.15 on…
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Responding to a new emphasis by regulatory agencies that firms manufacturing drug products demonstrate the efficacy of disinfectants used in controlled environments, ASTM International Committee E35 on Pesticides and Alternative Control Agents has begun to develop a proposed new standard, WK12880 , Guide for Evaluation of Clean Room Disinfectants. WK12880 is under the jurisdiction of Subcommittee…
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A need for a new test method to determine the effective thermal conductivity of fire resistive materials at high temperatures has prompted ASTM International Committee E37 on Thermal Measurements to begin work on a proposed new standard, WK12643 , Test Method for Slug Calorimetry. The proposed standard is under the jurisdiction of Subcommittee E37.05 on Thermophysical Properties. According to…
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ASTM International Committee C24 on Building Seals and Sealants invites interested parties to participate in the development of a proposed new standard that will use photographs to illustrate various types of sealant failures. WK11731 , Guide for Diagnosing Sealant Failure by Comparison to Reference Photographs, is under the jurisdiction of Subcommittee C24.10 on Specifications, Guides and…
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X-ray fluorescence spectrometry is used often to determine a wide range of elements in alloys. The technique provides rapid, accurate, and precise multi-element analysis that enables efficient melt process control. It is also widely used for certification and over-check analysis of product. Although x-ray fluorescence has become a widely used technique of analysis by the nickel alloy industry,…
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ASTM International Committee E37 on Thermal Measurements is seeking participation in a new subcommittee, E37.09 on Biological Calorimetry. Since its inception, the focus of Committee E37 has been the creation of methods for the calibration and use of thermal analysis instrumentation. One of the first types of thermal analysis instruments that was developed commercially on a large scale was…
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ASTM International Committee C24 on Building Seals and Sealants is currently working to fill a need for a weatherproofing sealant field test standard. The result, proposed standard WK7800, Guide for a Non-Destructive, Continuous, Field Test of Installed Weatherproofing Sealant, features a field test that has been used by sealant professionals for years, but has not, up to this point, been…
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ASTM International Committee C24 on Building Seals and Sealants is now working on a proposed new standard, WK6920, Fatigue Resistance of Structural Silicone. The standard, which is under the jurisdiction of ASTM Subcommittee C24.20 on General Sealant Standards, is intended to serve as an enhancement to current performance requirements for structural silicones and to help users ascertain that…