4.8.53903.0076200. 5525-06 89-13 5525 International Standard TSO INTERNATIONAL ORGANIZATION FOR STANDARDIZATION MEXAYHAPOAHAR OPFAHW3ALMA IO CTAHAAPTW3AUMM+ORGANISATION INTERNATIONALE DE NORMALISATION Potatoes - Storage in the open (in clamps) Pommes de terre -- Entreposage en plein air (en prismes) Second edition - 1986-12-01 UDC 635.21 : 664.8.031 Ref. No. 1SO 5525-1986 (E) [SO 5525-1986 (E) Descriptors : agricultural products, vegetables, potatoes, storage, food storage. Pricebased on 4pages yright international Organization for Standardization without license from IHS Not for Resale 5525-86 14851903 0076201 Foreword Iso (the International Organization for Standardization) is a worldwide federation of national standards bodies (IsO member bodies). The work of preparing International Standards is normally carried out through Iso technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, govern- mental and non-governmental, in liaison with Iso, also take part in the work. Draft International Standards adopted by the technicai committees are circulated to the member bodies for approval before their acceptance as International Standards by the Iso Council, They are approved in accordance with 1so procedures requiring at least 75 % approval by the member bodies voting. International Standard ISO 5525 was prepared by Technical Committee ISO/TC 34, Agricultural food products. This second edition cancels and replaces the first edition (IS0 5525-1978), of which it constitutes a minor revision. Users should note that all International Standards undergo revision from time to time and that any reference made herein to any other International Standard implies its latestedition,unlessotherwisestated. International Organization for Standardization,1986 Printed in Switzerland Copyright International Organization for Standardization 4.8.5.1.903 00762n2 5.52.5-86 ISO 5525-1986 (E) INTERNATIONAL STANDARD Potatoes -- Storage in the open (in clamps) Introduction apart from cleaner ones. Potatoes which have been exposed to 0 rain shall be dried and marketed as quickly as possible, as they Storage of potatoes with or without artificial cooling is dealt are likely to suffer rapid deterioration if stored. with in Iso 2165, Ware potatoes Guide to storage. However in some countries, most potatoes are commonly stored in clamps (temporary silos) constructed outdoors. In 2.4 Various treatments these countries, the technology of storage depends largely on local conditions, but simple methods are in widespread use. It Chemicals may be applied in order to prevent sprouting, in has therefore been found necessary to make these methods the compliance with the directions in force in certain countries. subject of an International Standard. 2.5 Putting into store Scope and field of application Mature potatoes of suitable quality shall be put into store as This International Standard lays down guidelines relating to the soon as possible after harvesting and then disturbed as little as technique of storing potatoes outdoors in clamps, to allow a possible. quality suitable for consumption to be maintained. The potatoes should be placed in the clamp with the utmost These guidelines apply only in regions with temperate climates. care in order to avoid damage to the tubers. Hydraulic tipping trailers should be used for the clamp face, 2 Conditions of harvesting and putting into and the wheels of the trailers should be blocked. The trailers store should be tipped slowiy to allow the tubers to roll as gently as possible into the clamp. The potatoes should be arranged using a blunt-edged fork equipped either with buttons on the ends of 2.1 Varieties the prongs or with a bar welded across the prongs in order to prevent spearing of the tubers. The use of mechanical lifts The methods of storage outlined refer equally to all varieties of