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Hausner Ratio and Carr Index: What the Numbers Tell You and Where They Break Down

Both the Hausner Ratio and Carr Index reduce bulk and tapped density to a single number. The mechanism behind that number, whether aeration, particle shape, or surface cohesion, determines whether it supports a process decision or actively misleads one.

Calcium Carbonate Powder in Polypropylene: Dust Suppression and Dosing Errors

Dust suppression oil can reduce airborne calcium carbonate [...]

Why Hopper Fill Level Changes Powder Discharge

Do not diagnose a feeder as if the [...]

Powder Flowability: Factors and Measurement Techniques

Powder flowability is not one fixed property. A [...]

Loss in Weight Feeder Drift After Refill: The Refill Shock Mechanism and How to Diagnose It

Loss in weight feeder drift often starts at [...]

Functional Importance of Porosity in Food Powders

Article updated February 2026 Porosity controls hydration [...]

Powder Release Protocol: Sampling Rules and Acceptance Criteria Guide and Check-List

A powder release protocol is an incoming gate [...]

Deaeration lag, why “easy flowing” powders still surge

Deaeration lag in powders creates a timing mismatch [...]

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