IS 11509 : PART 1 : 2012/ISO 4548-1 : 1997 Methods of Test for Full - Flow Lubricating Oil Filters for Internal Combustion Engines: Part 1 Differential Pressure/Flow Characteristics

Reaffirmed 2018

NATIONAL FOREWORD

This Indian Standard (Part 1) (First Revision) which is identical with ISO 4548-1 : 1997 Methods of test for full-flow lubricating oil filters for internal combustion engines - Part 1: Differential pressure/ flow characteristics issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on the recommendation of the Automotive Prime Movers, Transmission and Steering Systems and Internal Combustion Engines Sectional Committee and approval of the Transport Engineering Division Council.

This standard was first published in 1985 based on ISO 4548-1 : 1982. This revision was undertaken due to revision of base standard and to harmonize the standard with the latest version of ISO 4548-1 : 1997 under dual numbering system.

The text of ISO Standard has been approved as suitable for publication as an Indian Standard without deviations. Certain conventions are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the following:

a) Wherever the words International Standard appear referring to this standard, they should be read as Indian Standard.

b) Comma (,) has been used as a decimal marker while in Indian Standards, the current practice is to use a point (.) as the decimal marker.