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【英文标准名称】:Fruitandvegetableproducts;DeterminationofpH
【原文标准名称】:水果和蔬菜制品.pH值的测定
【标准号】:ISO1842-1975
【标准状态】:作废
【国别】:国际
【发布日期】:1975-12
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC34
【标准类型】:()
【标准水平】:()
【中文主题词】:蔬菜;水果蔬菜产品;植物制品;农产品;化学分析;化学分析和试验;pH值;水果;电位测量法
【英文主题词】:chemicalanalysis;ph;fruits;vegetables;plantproducts;fruit-andvegetableproducts;potentiometricmethods;agriculturalproducts;chemicalanalysisandtesting
【摘要】:
【中国标准分类号】:X04
【国际标准分类号】:5295;0520
【页数】:2P;A4
【正文语种】:英语


Product Code:SAE J200
Title:Classification System for Rubber Materials
Issuing Committee:Committee On Automotive Rubber Specs
Scope:ScopeThis classification system tabulates the properties of vulcanized rubber materials (natural rubber, reclaimed rubber, synthetic rubbers, alone or in combination) that are intended for, but not limited to, use in rubber products for automotive applications.The SAE Committe on Automotive Rubber Specifications (CARS) has the sole responsibility for SAE J200. CARS Works closely with and receives input from ASTM Subcommittee D11.30 on Classification of Rubber Compounds with the goal to keep SAE J200 and ASTM D 2000 technically equivalent. Candidate materials presented for development of new tables or for inclusion in Tables A1 or A2 of SAE J200 or Table X1.1 of ASTM D 2000 shall be initiated with the SAE CARS Committee. The procedure to be followed is detailed in Appendix C of SAE J200.This document may serve many of the needs of other industries in much the same manner as SAE numbered steels. It must be remembered, however, that this system is subject to revision when required by automotive needs. It is recommended that the latest revision always be used. This document is based on the premise that all rubber materials intended for use in rubber products can be arranged into characteristic designations. These designations are determined by types, based on resistance to heat aging, and classes, based on resistance to swelling by oil. Basic levels are thus established which, together with values describing additional requirements, permit complete description of the quality of all rubber materials. In all cases where provisions of this document would conflict with those of the detailed specifications for a particular product, the latter shall take precedence.When the rubber product is to be used for purposes where the requirements are too specific to be completely prescribed by this classification system, it is necessary for the purchaser to consult the supplier in advance to establish the appropriate properties, test methods, and specification test limits.PurposeThe purpose of this document is to provide guidance to the engineer in the selection of practical, commercially available rubber materials, and further to provide a method for specifying these materials by the use of a simple line call-out designation.This document was developed to permit the addition of descriptive values for future rubber materials without complete reorganization of the classification system and to facilitate the incorporation of future new methods of test to keep pace with changing industry requirements.