Re HFCS and pH A couple of years ago Dr Rob Currie did a study of high fructose corn syrup (HFCS) at the University of Manitoba in Winnipeg. A brief account of his study appeared in the May issue of Bee News - published by the Alberta Beekeepers Association. Two quotes from the article: "Acid hydrolysis is known to result in syrup injurious to honeybees" and "(Dr Currie) does warn beekeepers , however, to be aware of two possible problems of off-spec HFCS: low pH (4 or lower), and a coloured syrup. Most HFCS is colourless; coloured syrup may be an indication that it was manufactured by acid hydrolysis"