news ISO 10993 certification of medical polymer splint polyurethane substrate tri(dimethylaminopropyl)hexahydrotriazine ISO 10993 certification for medical polymer splint polyurethane substrate tri(dimethylaminopropyl)he... 03/1920ISO 10993 certification of medical polymer splint polyurethane substrate tri(dimethylaminopropyl)hexahydrotriazine