Short-path distillation system Tygon S3™ E-3603 tubing package includes (1) 10 foot length of 12696-07 vacuum tubing and (1) 50 foot box of 12680-30 standard laboratory tubing. Tygon S3™ E-3603 is phthalate-free and is FDA 3A and USP Class VI compliant. Vacuum tubing is 1/2" ID, standard tubing is 3/8" ID.