[mylife]

Robust porous prill?

[BenLurkin]

“A prill is a small aggregate or globule of a material, most often a dry sphere, formed from a melted liquid. Prilled is a term used in mining and manufacturing to refer to a product that has been pelletized. The pellets are a neater, simpler form for handling, with reduced dust.

“The material to be prilled must be in a solid state at room temperature and a low-viscosity liquid when melted. Prills are formed by allowing drops of the melted prill substance to congeal or freeze in mid-air after being dripped from the top of a tall prilling tower. Certain agrochemicals such as urea are often supplied in prilled form.

“Fertilizers (ammonium nitrate, urea, NPK fertilizer) and some detergent powders are commonly manufactured as prills”

https://en.wikipedia.org/wiki/Prill

[imardmd1]

Robust = stable in form, behavior, and composition.

[cuban leaf]

Robust porous prill?

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I bought one of those once off Amazon. It was made in china and was a piece of crap. It wasn’t robust at all, but it was porous. It was one of the most porous prills I’d ever seen.