Flame Retardant Harris & Menuk Product Search Select Category Flame Retardant Cotton: CO Polyester: PES Polyamide: PA Viscose: VI Spandex, Lycra: EL ZDHC MRSL Bluesign Oeko Tex GOTS Product Name Description Substrate Ionic Character Brooksol MFR 338-Durable FR Organic phosphorus-based flame retardant agent PA / PESNon-ionic Brooksol MFR 337-Durable FR Organic phosphorus based flame retardant agent COweakly Cationic Brooksol MF 332 Phosphorus Ester based flame retardant agent All SubstratesNon-ionic