5703 NTERNATIONAL STANDARD (so) INTE RNATIONAL ORGANIZATION FOR STANDARDIZATION MEXAYHAPOAHAR OPTAHM3AUMR NO CTAHAAPTW3ALWMORGANISATION INTE RNATIONALE DE NORMALISATION ANsr Internat Doc Sect Equipment for vine cultivation and wine making - Grape presses -- Methods of test Materiel viti-vinicole -- Pressoirs a raisin - Meéthodes d'essai First edition -- 1979-02-01 FEB 2 7 1979 ISO 5703-1979 (E) Ref. No. 1SO 5703-1979 (E) UDC 663.255.4 : 620.1 Descriptors : agricultural machinery, viticultural and wine making equipment, presses, equipment specifications, tests. Price based on 10 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 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 circuliated to the member bodies for approval before their acceptance as International Standards by the ISO Council. International Standard ISO 5703 was developed by Technical Committee ISO/Tc 23, Tractors and machinery for agriculture and forestry, and was circulated to the member bodies in March 1977. It has been approved by the member bodies of the following countries : Australia India Romania Austria Iran South Africa, Rep. of Chile Italy Switzerland Turkey Czechoslovakia Korea, Rep. of United Kingdom France New Zealand U.S.S.R. Germany, F.R. Portugal The member body of the following country expressed disapproval of the document on technical grounds : Spain @ Intarnational Organization for Standardization, 1979 : Printed in Switzerland Copyright International Organization for Standardization INTERNATIONAL: STANDARD ISO 5703-1979 (E) Equipment for vine cultivation and wine making -- Grape presses -- Methods of test 0 INTRODUCTION 2 REFERENCES The main operations characterizing a press are : ISO 3835/ll, Equipment for vine cultivation and wine making - Vocabulary - Part ll. feeding-in the grapes; IS0 3835/lll, Equipment for vine cultivation and wine compression of the grapes; making -- Vocabulary -- Part Il.1) extraction of the must or the wine; removal of the pomace. These operations may be continuous or discontinuous, 3 DEFINITIONS depending on the type of press. In addition to the definitions given in ISO 3835/ll and These main operations may be accompanied by an auxiliary IS0 3835/lll and, in particular, operation such as the disintegration of the grapes, which are "load : The mass of fresh or fermented grapes supplied to compressed during the pressing operation. the press", The presses may be fed with grapes having the following the foilowing definitions apply : characteristics : a) physical 3.1 yield : whole, pumped or not For discontinuous press : The ratio of the load to the pressing time between the commencement of loading crushed and the end of unloading. - destalked For continuous press : The ratio of the load'supplied -- destalked and crushed before or after destalking to the time of continuous operation. - drained or not 3.2 overall yield (for discontinuous acting press) : The etc. ratio between the load and the time of pressing from the commencement of loading to the end of evacuation of b)technological marc fermented 3.3 gross output : Relationship between the total mass of -- heated crude liquid extracted and the load applied. submitted to carbonic maceration 3.4 net output : Relationship between the total mass of enzyme-treated the clear must or clear wine extracted and the load applied. etc. 3.5 overall evaluation : Percentage assessment, from the load supplied, of the clear must or the clear wine, the 1 SCOPEANDFIELDOFAPPLICATION insoluble particles and dried pomace. This