The Harrington Chemical Compatibility Guide is a reliable tool that can be used toward determining how various chemicals affect different plastic piping materials, elastomeric materials, pump seals, and high purity metallic tubing. This data includes reference to 23 common plastic pipe materials and high purity metallic tubing, covering over 880 chemicals. This comprehensive data, now available for iPhone and iPad, can be used by the engineering and end user communities as a guide toward helping make informed decisions on chemical compatibility of various piping systems for proper transport, storage, and use.