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Blog Archives

What is the particle count of the ISO grades of test dust?

We provide particle size analysis using various techniques but we do not perform particle counting. Please click on the following link for information regarding particle-counting services: Interbasic Resources, Inc www.ibr-usa.com. We receive many questions regarding ISO, SAE and AC Test Dusts. For answers to most of these questions please read the “Test Dust History”

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What particle sizes are attainable with your current equipment?

Jet milling: Particle sizes attained from jet milling are as low as a 4-micron median to as high as a 45-micron median. Jet milling is best suited for distributions ranging from 0-150 microns. Hammer milling: Best suited for coarser distributions ranging from as low as ~20 microns up to ~ 2000 microns. Vibratory screening: Screen sizes from 38 – 4800 microns are available. Air classification: Particle size distributions as tight as nominal 0-3 microns and as broad as nominal 0-45 microns can be achieved. Jaw crushing: Primarily used as a pre-crushing step for material that is too large to feed into a secondary mill, such as a jet mill or hammer mill. Our jaw crusher can reduce material as large as 5” x 7” down to minus 10 mesh in one pass.

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