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IEC 60970:1989 ED1

Methods for counting and sizing particles in insulating liquids

Jun 15, 1989

General information

99.60     Jul 16, 2007

IEC

TC 10

International Standard

17.220.99     29.040.10  

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Scope

Describes sampling procedures and methods for determining particle concentration and particle size distribution. Three methods are recommended, one using an automatic particle size analyzer and two based on the counting, with an optical microscope, of particles on the surface of a filtering membrane. All methods are applicable to both unused liquids and liquids in service.

Life cycle

NOW

WITHDRAWN
IEC 60970:1989 ED1
99.60 Withdrawal effective
Jul 16, 2007

REVISED BY

PUBLISHED
IEC 60970:2007 ED2