2209 NTERNATIONAL STANDARD ( SO) Liquid halogenated hydrocarbons for industrial use Sampling First edition - 1973-06-01 ISO 2209-1973 (E) UDC 661.723 : 543.05 : 620.113 Ref. No. ISO 2209-1973 (E) Descriptors : halohydrocarbons, liquids, sampling. Price based on 5 pages Copyright International Organization for Standardization Not for Resale FOREWORD ISo (the International Organization for Standardization) is a worldwide federation of national standards institutes (IsO Member Bodies). The work of developing International Standards is carried out through IsO Technical Committees. Every Member Body interested in a subject for which a Technical Committee has been set up has the right to be represented on that Committee. International organizations, governmental and non-governmental, in liaison with IsO, also take part in the work. Draft International Standards adopted by the Technical Committees are circulated to the Member Bodies for approval before their acceptance as International Standards by the ISO Council. ISO/TC 47. Chemistry. It was approved in May 1971 by the Member Bodies of the following countries : Austria Israel Spain Belgium Italy Sweden Egypt, Arab Rep. of Netherlands Switzerland Turkey France New Zealand Germany Portugal United Kingdom Hungary Romania U.S.A. India South Africa, Rep. of U.S.S.R. No Member Body expressed disapproval of the document. A comprehensive study on sampling of chemical products is under way in Sub-Committee 2, "Sampling of chemical products", of Technical Committee ISO/TC 47. It is anticipated that International Standard ISO 2209 will have to be reviewed in the tight of the final results of this study. @ International Organization for Standardization,1973 PrintedinSwitzerland Copyright International Organization for Standardization se from IHS ISO 2209-1973 (E) INTERNATIONAL STANDARD Liquid halogenated hydrocarbons for industrial use Sampling 1 SCOPE AND FIELD OF APPLICATION 4 PROCEDURE This International Standard specifies sampling'procedures WARNING for liguid halogenated hydrocarbons for industrial use, with A number of hazards may arise in the sampling of volatile the exception of liquefied gases. solvents. They include flammability and toxicity.1) NOTE - For the sampling of liquid halogenated hydrocarbons intended to be used as raw materials for paints and varnishes, see Flammability Iso 842, Raw materials for paints and varnishes -- Sampling. The lower-boiling solivents are flammable and the following The methods are applicable to products not contaminated precautions are advised : by an extraneous phase (water, solid deposits, etc). However, accidental pollution is also considered and an 1) Care must be taken to see that all sampling initial examination is provided for checking phase equipment used for these substances is made of homogeneity. low-energy spark generating material such beryllium-copper alloys or glass. If an earth connection Three cases are considered, namely : can be made to large containers, this should be done. - small containers (cans, drums); 2)All regulations regarding "controlled" large containers (cylinders, tanks); must be strictly adhered to. continuous sampling. Toxicity Vapour from lower-boiling solvents is toxic and precautions 2 PRINCIPLE should be taken to avoid its inhalation. Formation of a blended buik sample, representing the whole of the batch, by mixing several elementary samples. It is recommended that two persons should be present The number and the method of taking of the eiementary when samples are drawn fromlarge containers such as samples will depend on the number and capacity of vessels storage tanks, road tanks or rail tanks. containing the product. Before sampling from rail tanks it should be ensured that no shunting operations are likely. 3 APPARATUS In order to allow for the high coefficient of expansion of certain products and to allow for the need ultimately to Three main types of apparatus can be used for sampling, as mix the sample