7103 (ISO International Standard INTE RNATIONAL ORGANIZATION FOR STANDARDIZATION MEXAyHAPOAHAR OPrAHW3AUMA nO CTAHAAPTW3ALWORGANISATION INTE RNATIONALE DE NORMALISATION ANsr Internat Doc Sert Liquefied anhydrous ammonia for industrial use Sampling - Taking a laboratory sample Ammoniac anhydre liquefie a usage industriel - Echantillonnage - Prelevement d'un échantillon pour laboratoire First edition -- 1982-12-01 Corrected and reprinted -- 1983-03-15 UDC 661.51 : 620.11 : 543.05 Ref. No. ISO 7103-1982 (E) Descriptors : industrial products, ammonium compounds, sampling. Copyright International Organization for Standardization Price based on 3 pages tted without license from IHS Not for Resale Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (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 authorized 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. International Standard ISO7103was developed byTechnical Committee ISO/TC 47, Chemistry, and was circulated to the member bodies in July 1981. It has been approved by the member bodies of the following countries : Austria india Poland Belgium Italy Portugal Brazil Korea, Dem. P. Rep. of Romania South Africa, Rep. of Czechoslovakia Korea, Rep. of Egypt, Arab Rep. of Mexico Switzerland Netherlands Thailand France USSR Germany, F. R. New Zealand Hungary Philippines The member body of the following country expressed disapproval of the document on technical grounds : United Kingdom This International Standard has also been approved by the International Union of Pure and Applied Chemistry (IUPAC). @ International Organization for Standardization, 1982 Printed in Switzerland Copyright International Organization for Standardization g permitted without license from IHS Not for Resale ISO 7103-1982 (E) INTERNATIONAL STANDARD Liquefied anhydrous ammonia for industrial use Sampling - Taking a laboratory sample WARNING -- Liquefied anhydrous ammonia is a highly corrosive, toxic substance, which boils at -- 33,3 oC at standard atmospheric pressure. Its action on the skin and eyes is strongly corrosive, producing severe and painful burns. Its vapour is strongly irritant to the mucous membrane and eyes, and produces a suffocating effect on the respiratory tract. In concentrations of 16 to 25 % (V/ V), gaseous anhydrous ammonia forms explosive mixtures with air. Personnel responsible for handling the product shall be fully informed as to its dangerous character and the precautions to be taken. Operators shall wear rubber gloves a rubber apron and full face and head protection, and shall be provided with a protec- tive gas-mask fitted with a filter for ammonia. Samples shall be handled only inside a well-ventilated fume-cupboard. For further information, see the appropriate sections of Iso 3165. 1 Scope and field of application 4 Apparatus 4.1 Equipment for taking the sample, including the This International Standard specifies the apparatus and the procedure to be used for taking a reprensentative laboratory following items : from a container (barrel, cylinder, tank, etc.). 4.1.1 Sampling cylinder (see typical cylinder in figure 1), made of stainless steel, effective capacity not less than 1 litre, capable of withstanding an internal pressure of not less than Reference 2 3 MPa**. ISo 3165, Sampling of chemical products for industrial use Check the volume of the cylinder by filling with water. The Safety in sampling. sampling cylinder shall have two needle valves, A and B, joined to two tu