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API Screen Designation Chart (RP 13C) — Field Quick Guide

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

Free printable quick guide to the API RP 13C screen designation system: API numbers, D100 separation in microns, typical duty per section, and how to screen a shaker correctly.

What's inside the PDF

The full API-number → D100 (µm) table, API 20 to API 400
Typical duty for each designation, top-hole to finest practical
The 4 field rules: record API numbers (not mesh), 75–80% deck coverage, vendor comparison, torn-panel policy

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Related on SC DrillTech

→ The full interactive RP 13C chart → Shale shaker — equipment guide → Troubleshooting Center

More free downloads

→ Centrifuge Daily Inspection Checklist → Rig Solids-Control Audit Checklist → Drilling Mud Properties → Shaker Screen Inspection Checklist → All field guides & checklists

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