Polyprolene monofilament surgical suture is a sterile nonabsorbable isostatic crystalline steroisomer of a linear hydrocarbon polymer containing little or no saturation. Suture characteristics include; clear monofilament (undyed) and blue monofilament (either D&C Blue # 6 or copper phthalocyanine blue dye). Polypropylene monofilament surgical suture meets all requirements established by the United States Pharmacopeia (U.S.P.) for nonabsorbable surgical sutures.