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Residual accelerator chemicals in medical gloves appear to be a leading cause of allergic contact dermatitis in health care workers. A new ASTM International standard allows rubber glove manufacturers to monitor the level of residual chemicals in their end products and to potentially make manufacturing changes to reduce allergen levels. The new standard, D7558 , Test Method for Colorimetric/…
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Rapid hardening hydraulic cements are used in a variety of applications in which reduced cementitious contents are desired or early service is needed. Included among these applications are paving, construction, stucco, mortar and block. A newly approved ASTM International standard covering these cements, ASTM C1600/C1600M , Specification for Rapid Hardening Hydraulic Cement, has been developed by…, Type URH, —ultra rapid hardening, for use where ultra high early strength is desired;, Type VRH, —very rapid hardening, for use where very high early strength is desired;, Type MRH, —medium rapid hardening, for use where mid-range rapid hardening, high early strength is desired; and, Type GRH, —general rapid hardening, for use when the higher strength properties of Type VRH or a Type MRH cement is not required. “ASTM C1600 lists minimum requirements for compressive strength, setting time, shrinkage and soundness (autoclave expansion),” says Hicks. “Optional specifications for sulfate expansion, alkali silicate reactions with aggregates, heat of hydration and expansion in water are also…
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Once approved, a proposed new ASTM standard would provide the U.S. Food and Drug Administration and personal lubricant manufacturers a means to evaluate the effect of a lubricant on the physical integrity of condoms. No standard currently exists for this type of testing. Manufacturers of condoms and rubber gloves as well as personal lubricants are welcome to join in the development of ASTM…
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The growing number and severity of healthcare association infections has increased interest in standardization efforts for antimicrobial gloves. In order to explore this area, ASTM International Committee D11 on Rubber has created a new task group on antimicrobial medical gloves. Glove suppliers, manufacturers and distributors, as well as contract test labs, government agency…
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Responding to requests from the food service industry, ASTM International Committee D11 on Rubber has developed and approved a new standard, D7329 , Specification for Food Preparation and Food Handling (Food Service) Gloves. The new standard, under the jurisdiction of Subcommittee D11.40 on Consumer Rubber Products, will serve as a referee and guide to glove manufacturers, distributors and the…
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A recently approved revision to ASTM International standard C 150 , Specification for Portland Cement, includes three significant technical changes to the document. The changes are part of a joint effort between ASTM and the American Association of State and Highway and Transportation Officials to harmonize C 150 with AASHTO’s standard, M 85, Specification for Portland Cement. C 150 is under the…
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Testing for potent allergens in rubber is the purpose of a proposed new ASTM standard. WK16334 , Test Method for the Immunological Measurement of Four Principal Allergenic Protein (Hev b 1, 3, 5 and 6.02) in Natural Rubber and Its Products, is being developed by Subcommittee D11.40 on Consumer Rubber Products, part of ASTM International Committee D11 on Rubber. According to Timo Palosuo and…
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A proposed new standard currently being developed by ASTM International Committee F01 on Electronics will prove to be useful to the tantalum sputtering target industry. The proposed standard, WK9490, Test Method for Reporting Crystallographic Orientation of Sputtering Target Materials, is under the jurisdiction of Subcommittee F01.17 on Sputter Metallization. "The tantalum sputtering target…
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ASTM International Committee F01 on Electronics is currently developing a proposed new standard that will provide uniformity in the values reported for oxygen content in aluminum alloys used for sputtering targets in the manufacture of integrated circuits. The proposed standard, WK9120, Determination of Oxygen in High Purity Aluminum and Alloys in High Purity Aluminum Base by Inert Gas Fusion…
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After a 35-year-absence, the natural cement industry is being revived and, along with it, a long-withdrawn ASTM International standard. Until it closed in 1970, the Century Cement Company in Rosendale, N.Y. was the last company to manufacture natural cement. Up to that point, Rosendale had been the center of the industry, the source of more than half of all natural cement produced in the U.S.…