This tool should be used as a guide only. Seaforce 60M may not be an exact match for Seacare Harmony A/F793 by but we have given the closest match we can. Seaforce 60M should do the same job and have similar properties but you should always read the technical data sheets for both Seaforce 60M and Seacare Harmony A/F793 to be sure. Please see any notes to see any major differences and call us on 01285 862132 if you have any specific questions.