Hydraulic fluid power -- Filters -- Statement of requirements
A statement of requirements (SOR) is defined as a document to be provided by a user to specify his requirements to a manufacturer. A model SOR is described to enable a user to define his requirements fully, without ambiguity and in standard form so that the supplier can meet the requirements as accurate as possible. Annex A contains a standard form for a SOR, annex B shows clearances.
A standard is reviewed every 5 years
Revisions / Corrigenda