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