ISO 11500:2022
2022-12
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ISO 11500:2022
Abstract
This document specifies an automatic particle counting procedure for determining the number and sizes of particles present in hydraulic-fluid bottle samples of clear, homogeneous, single-phase liquids using an automatic particle counter (APC) that works on the light-extinction principle.
This document is applicable to the monitoring of:
a) the cleanliness level of fluids circulating in hydraulic systems;
b) the progress of a flushing operation;
c) the cleanliness level of support equipment and test rigs;
d) the cleanliness level of packaged stock fluid.
NOTE Measurements can be made with particles suspended in the original liquid or in a sample of the liquid diluted with a compatible liquid when APC coincidence error limits are exceeded.
General information
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Status: PublishedPublication date: 2022-12Stage: International Standard published [60.60]
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Edition: 3Number of pages: 20
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Technical Committee :ISO/TC 131/SC 6ICS :23.100.60
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Amendments
Amendments are issued when it is found that new material may need to be added to an existing standardization document. They may also include editorial or technical corrections to be applied to the existing document.
Amendment 1
Edition 2026
Life cycle
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Previously
WithdrawnISO 11500:2008
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Now
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00
Preliminary
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10
Proposal
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20
Preparatory
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30
Committee
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40
Enquiry
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50
Approval
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60
Publication
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90
Review
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95
Withdrawal
Amendments
Provide additional content; available for purchase; not included in the text of the existing standard.PublishedISO 11500:2022/Amd 1:2026
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00