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Biofilm, which is defined as microorganisms living in a self-organized cooperative community, is still under the radar for many industry, medical, professional and regulatory agencies. A newly approved ASTM International standard is the latest in a series of biofilm standards being developed by Committee E35 on Pesticides and Alternative Control Agents. The new standard, E2647 , Test Method for…
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The use of rolling devices can provide a means to evaluate the adhesion of weather seals, for quality control in new installations, general evaluation of existing installations, and the investigation of water and air leakage through building enclosures. In order to better facilitate the use of rolling devices, ASTM International Committee C24 on Building Seals and Sealants is developing a…
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All interested parties are invited to join in the ongoing development of a proposed new standard, WK19982 , Test Method for ICP Analysis of Calcium and Magnesium in Magnesium Ferrosilicon. WK19982 is being developed by Subcommittee E01.01 on Iron, Steel and Ferroalloys, part of ASTM International Committee E01 on Analytical Chemistry for Metals, Ores and Related Materials. According to Robert…
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ASTM International Committee E35 on Pesticides and Alternative Control Agents has now published the last in a series of three ASTM International standards that address the activity of hand hygiene agents against microbes that can be transmitted via contaminated hands. Subcommittee E35.15 on Antimicrobial Agents developed the new standard, ASTM E2613 , Test Method for Determining Fungus-…
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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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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,…