I am looking for some insight. We have point of sale literature that has information pertaining to the performance characteristics of various grades of metal bars. The language used is "Average Properties" and "Typical Hardness" and ranges are given. We also have a disclaimer that states the "information is correct to the best of our knowledge and we assume no responsibility for errors". Can these brochures be considered for reference only and not subject to control? Do we need addtional disclaimers specifically stating that the documents are for reference only? Please help.