PSD Quick Reference — D10 / D50 / D90 & Equipment Cut Points

By Othman Soliman — Solids Control & Drilling-Waste specialist, 26+ yrs (GCC & MENA). Last reviewed July 2026.

Free quick reference for particle size distribution: what D10, D50, D90 and D100 mean, matching particle size to removal equipment, separation sharpness and how to read the curve.

What's inside the PDF

The percentiles decoded: D10, D50, D90, D100 — and why RP 13C uses D100
Size-to-machine table: shaker → desander → desilter → centrifuge → dilution
Three curve-reading rules including the “2-micron centrifuge” claim trap

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Related on SC DrillTech

→ PSD — pillar guide → D50 vs D100 explained → Reactive vs inert solids

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