Issues With Water Soluble Testing

Does anyone have a lab recommendation to test particle size/distribution? Figuring this out seems like a logical starting point.

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I would check with the labs you’ve been working with. It’s not too uncommon of an analysis type that it should be pretty easy to find a lab with those capabilities.

Doing the same using Gum Arabic. Used this method at a previous job, hoping for similar results to get a powdered and liquid four at a new location.