ISO 3310-3:1990(en) Test sieves — Technical requirements and testing — Part 3: Test sieves of electroformed sheets
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, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.
International Standard ISO 3310-3 was prepared by Technical Committee ISO/TC 24, Sieves, sieving and other sizing methods.
ISO 3310 consists of the following parts, under the general title Test sieves — Technical requirements and testing :
— Part 1: Test sieves of metal wire cloth
— Part 2: Test sieves of perforated metal plate
— Part 3: Test sieves of electroformed sheets
Annex A of this part of ISO 3310 is for information only.
Introduction
Since the accuracy of test sieving depends on the dimensional accuracy of the test sieve openings, the consistency of size within very close tolerances that can be achieved for the openings of electroformed sheet makes them attractive for test sieving of very fine particulate material.
Test sieves of electroformed sheet must be handled with particular care as the very fine apertures are invisible to the unaided eye. Notes on cleaning these sieves before and after use are given in annex A.
1 Scope
This part of ISO 3310 specifies the technical requirements and corresponding test methods for test sieves in which the sieving medium is a metal sheet with electrochemically formed apertures.
It applies to test sieves having round (circular) or square apertures ranging in size from 500 μm to 5 μm, in accordance with ISO 565.
2 Normative reference
The following standard contains provisions which, through reference in this text, constitute provisions of this part of ISO 3310. At the time of publication, the edition indicated was valid. All standards are subject to revision, and parties to agreements based on this part of ISO 3310 are encouraged to investigate the possibility of applying the most recent edition of the standard indicated below. Members of IEC and ISO maintain registers of currently valid International Standards.
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