20.7.90 Official Journal of the European Communities No L 189/1 (Acts whose publication is not obligatory) COUNCIL . COUNCIL DIRECTIVE of 20 June 1990 on the harmonization of the laws of the Member States relating to non-automatic weighing instruments ' (90/384/EEC) THE COUNCIL OF THE EUROPEAN COMMUNITIES; Having regard to the Treaty establishing the European Economic Community, and in particular Article 100a thereof, Having regard to the proposal from the Commission (1), In cooperation with the European Parliament (2), Having regard to the opinion of the Economic and Social Committee (), Whereas Member States have the responsibility of protecting the public against incorrect results of weighing operations by means of non-automatic weighing instruments when used for certain categories of applications; Whereas, in each Member State, mandatory provisions fix in particular the necessary performance requirements of non-automatic weighing instruments by specifying metrological and technical requirements, together with inspection procedures before and after going into service; whereas these mandatory provisions do not necessarily lead to different levels of protection from one Member State to another but do, by their disparity, impede trade within the Community; Whereas the national provisions ensuring such protection must be harmonized in ordér to guarantee the free movement of non-automatic weighing instruments while ensuring a justified level of protection in the Community; (1) O] No C 55, 4. 3. 1989, p. 6, and O] No C 297, 25. 11. 1989, p. 13. (2) OJ No C 158, 26. 6. 1989, p. 221, and OJ No C 149, 18. 6. 1990. (3) OJ No C 194, 31.7. 1989, p. 1. Whereas Community legislation as it stands at present provides that, notwithstanding one of the fundamental rules of the Community, namely the free movement of goods, barriers to intra-Community movement resulting from disparities in national laws on the use of products haveto be accepted in so far as the provisions of those national laws are recognized as necessary to ensure that the products concerned meet essential requirements; whereas the harmonization of laws in the present case must therefore be confined to -those provisions needed to ensure that non-automatic weighing instruments satisfy. the essential metrological and  performance requirements; whereas, -because they are essential, these requirements must replace . the corresponding national provisions; Whereas this Directive therefore contains only mandatory and essential requirements; whereas, to facilitate proof of conformity with the essential requirements; it is necessary to have harmonized standards at European level, in particular as to the metrological, design and construction characteristics, so that instruments -complying with those harmonized standards may be assumed to conform to the essential requirements; whereas these standards, harmonized at European level, are drawn up by private bodies and must remain non-mandatory texts; whereas for that purpose the European Committee for Standardization (CEN) and the European Committee for Electrotechnical Standardization (Cenelec) are recognized as the competent bodies for.the adoption of harmonized standards in accordance with the general guidelines for cooperation between the Commission - and those two bodies signed on 13 November 1984; whereas, within the meaning of this Directive, a harmonized - standard is a technical specification (European standard or harmonized document) adopted by one or both of those bodies upon a remit from the Commission in accordance with Council Directive 83/189/EEC of 28 March 1983 laying down a procedure for the provision of information in