There have always been numerous types, or formulations, of Tygon® tubing. Now with the move toward non-DEHP, phthalate free, tubing there are more. How do you determine which formulation is right for your application? Now that certian formulations are discontinued, which one have they been replaced with and will it preform like what we originally tested with or specified in our design? We understand these are real questions having to be worked through today. So we have put this list that not only has technical information about the new formulations, but also the original formulation information so you can compare the old and the new.