ISO 12103-1 PDF

Future revisions of ISO will accommodate changes in technology affecting test dust manufacturing processes and insure product consistency for years to come. Particle sizes greater than 30 microns are given as reference values. A naturally occurring irregularly shaped mineral dust suspended in hydraulic oil at a nominal concentration of Particles are measured as they pass through the aperture. West Coast Sales Sparks Blvd. The nominal specific gravity is 2.

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It specifies four grades of test dust including dust description, designation, particle size distribution, particle size analysis procedure, and chemical content. The intent in producing a separate standard for the description of test dust was to provide a simple and accurate test dust reference for use in other standards or documents where test dust use is required. Future revisions of ISO will accommodate changes in technology affecting test dust manufacturing processes and insure product consistency for years to come.

It was originally developed for testing automotive cabin air filters. Although it is not currently specified as a suitable contaminant for cabin air filters, it is used as a test contaminant for fuel system components, water filter performance evaluation, and other custom applications. A view of volume differential particle size data indicates a bi-modal distribution with approximate peaks at 4 and 20 micron size.

The bi-modal aspect of this product traces back to the original roller analysis specification of Fine Test Dust shown in former revisions of SAE J Specification. Samples from only two batches were used because only two batches of this type dust were produced prior to when ISO particle size limits were determined. The Multisizer IIe analyzer measures particles individually by volume mass. Particles for analysis are suspended in an electrolyte solution. The suspension is stirred and drawn through an aperture using a vacuum source.

Particles are measured as they pass through the aperture.

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