Axiom is  a general purpose Computer Algebra system. It is useful for research and development of mathematical algorithms. It defines a strongly typed, mathematically correct type hierarchy. It has a programming language and a built-in compiler.
Polybutylene is simply a type of plumbing material that was manufactured between the late 70's and early 90's. It is thought that it was installed in over 6 million homes during that time period.
PBW is an alkaline, non-caustic, environmentally and user friendly cleaner. Product Sizes: 12 â 1lb. jars, 6 â 4lb jars, 4 â 8 lb jars, 16lb pail, 50lb pail, 4 â 1 gallon pail.