730 标准查询与下载

DS/EN 268:1991 商品军火用火箭推进剂.要求和试验方法

This European Standard specifies a) the information to be provided by the manufacturer concaming tha production process, tha chemical composition and the physical characteristics b) the stability and sensitiveness type- tests and requirements for propellant powders intended for use in commercial ammunition in order to ensure their safe storage and handling and their safe use for this type of ammunition.

Propellants for commercial ammunition. Requirements and test methods

DS/ISO 758:1986 工业用液态化学制品.在20℃时的浓度测定

This International Standard specifies a reference method for the determination of the density, at 20 °C, of liquid chemical products for industrial use.

Liquid chemical products for industrial use. Determination of density at 20 Centigrades

DS/ISO 759:1986 工业用挥发性有机液体.在水槽中蒸发后干涸残余物的测定.一般方法

This International Standard specifies a general method for the determination of the dry residue, after evaporation on a water bath, of volatile organic liquids for industrial use. The method is applicable to products having dry residues after evaporation greater than or equal to 10 mg/kg [0,001 % (m/m)]. NOTES 1 For the determination of the non-volatile residue of fluorinated hydrocarbons for industrial use, see ISO 5789. 2 For the determination of the residue on evaporation of aromatic hydrocarbons, or other toxic volatile materials, having residues on evaporation of not less than 1 mg/100 ml, see ISO 5277.

Volatile organic liquids for industrial use. Determination of dry residue after evaporation on water bath. General method

DS/ISO 918:1986 工业用挥发性有机液体.蒸馏特性的测定

This International Standard specifies an apparatus and method for the determination of distillation characteristics of volatile organic liquids which (excluding petroleum products) having a boiling point in the range 30 to 300 °C approximately and are stable during distillation in atmospheric conditions.

Volatile organic liquids for industrial use. Determination of distillation characteristics

DS/ISO 6353/2:1985 化学分析试剂.第2部分:规范.第一系列

This part of ISO 6353 gives specifications and indicates the test methods to be used for checking conformity with these specifications for a first series of reagents used in analytical chemistry. This document should be read in conjunction with ISO 6353/1 which describes the general test methods (GM) applicable to the requirements of the reagent specifications and gives such general information as is required for the correct use of the standard. Particular attention is drawn to ISO 6353/1, clause 4, which describes the preparation of — standard solutions (SS) at dilutions I, II and III; — reagents solutions (RS); — indicator solutions (IS). In this part of ISO 6353, asterisked clause reference numbers referto ISO 6353/1.

Reagents for chemical analysis. Part 2: Specifications. First series

DS/ISO 6353/1:1985 化学分析试剂.第1部分:一般试验方法

This part of ISO 6353 specifies general test methods for verifying the compliance of reagents for chemical analysis with the specifications given in other parts of this International Standard.

Reagents for chemical analysis. Part 1: General test methods

DS/ISO 2590:1981 测定砷的一般方法.二乙基二硫化氨基甲酸银光度计法

This International Standard specifies a general method for the photometric determination of arsenic, using silver diethyldithiocarbamate.

General method for the determination of arsenic. Silver diethyldithiocarbamate photometric method