Technical Reference: EPI and PPI
Subject Overview: Ends per inch and picks per inch describe warp and weft thread density. They become more useful when read together with yarn count, weave and finished width rather than treated as isolated quality scores.
- Author & Reviewer
- Gaurav Jain, Founder & Denim Sourcing Director at AzAttire
- Industry Context
- Commercial Denim Manufacturing, Quality Testing & Global Sourcing
- Governing Test Standards
- ASTM, AATCC, and ISO international textile evaluation standards
- Associated Entity
- Ends per Inch and Picks per Inch (https://en.wikipedia.org/wiki/Units_of_textile_measurement)
- Practical Mill Sourcing Impact
- Ensures dimensional stability, shade continuity, batch-to-batch repeatability, and garment wash house performance.