For pleated filter cartridges, ISO 16889 beta-rated defines the specification designations and tolerances. The sections below describe the scope, the properties it leaves to companion standards, and the equivalent designations across standards bodies.
ISO 16889 beta-rated — Scope
ISO 16889 beta-rated specifies the designation system, dimensions and tolerances of pleated filter cartridges — mesh count or nominal opening, wire diameter and the permissible aperture deviations. Alloy chemistry, mechanical testing and delivery condition are governed by separate documents in the same standards family.
Tolerance Classes
ISO 16889 beta-rated defines tolerance limits on the average aperture and on the maximum single aperture, tightening as the aperture gets finer. For test-sieve duty the tighter ISO 3310-1 tolerances apply instead of the general cloth tolerances — specify sieve grade explicitly if the mesh will be used for particle-size analysis.
Specifications Defined by ISO 16889 beta-rated
| Outer diameter (mm) | Length (mm) | Micron rating (u00b5m) | End connection | Reference standard |
|---|---|---|---|---|
| 65 | 250 | 1 / 5 / 10 / 25 | DOE / 222 / 226 | Pleated 5x area |
| 65 | 500 | 1 / 5 / 10 / 25 | DOE / 222 / 226 | Pleated 5x area |
| 65 | 750 | 1 / 5 / 10 / 25 | DOE / 222 / 226 | Pleated 5x area |
| 83 | 500 | 1 / 5 / 10 / 25 | 226 bayonet | Pleated 5x area |
Equivalent Standards
Where direct equivalents exist (ISO ↔ ASTM ↔ DIN), they are listed on the parent Pleated Filter Cartridges page. Confirm against the specification table on this page — nominally equivalent documents can differ in tolerance limits.
When to Specify ISO 16889 beta-rated
Choose ISO 16889 beta-rated for international procurement and OEM supply where ISO documents are the contractual reference. It is the default modern specification for pleated filter cartridges.
