Somebody said they had a bottle of 99% vinegar. They probably had 9%. It is called acetic acid when it gets above 10 or 15% and is no longer suitable for handling in the kitchen. Even in an industrial situation, it is difficult to get higher than 80% acetic acid. The stuff is just too difficult to produce and store. It eats up stainless steel, plastics, nasal passages, brain cells, shoe soles, etc. It eats them up FAST too. I saw some 80% acetic eat through a polymer in 18 hours that 60% nitric, 63% hydrochloric, and some strong sulfuric wouldn't touch. Blake in San Antonio Mailto: blakeo@flash.net