Swiis is apparantly thinking about upgrading to a graham-type condensor. He has searced extensively using tfse. His question is not what type of cleaning solutions or chemicals to use, but HOW to clean it. Obviously a the cleaning instrument would need to be quite flexible to accomodate the coil of the condensor. Doesn't said flexibility comprimise the degree of pressure the brush would need to assert to make its way from the top to bottom of the coils? Which type of brush/instrument would be needed?