several people are asking about using two dialysers for treatment of over 80 kg pts. MOLDED PRODUCTS has made perallel and in series blood and dialyser lines for more than 8 years. allso has newly released study of 14 over 80 kg pts given in parallel treatment, period of one year, includes protocols used.look in yellow pages on renal web (this site)under MOLDED PRODUCTS their web page has pictures, and info ,need more ask GORDON WILL at moldprod@harlannet.com