A woven geotextile made of 100 % polypropylene slit film yarns. GEO 250W resists ultraviolet and biological deterioration, rotting, naturally encountered basics and acids. Polypropylene is stable within a pH range of 2 to 13. GEO 250W will satisfy the requirements as outlined in AASHTO M-288-0 6 for Class 2 Stabilization & Separation applications and meets the following M.A.R.V. values except where noted. Click here for Product Data Sheet.