78A durometer hybrid tubing, part T4200-4208, combines the attributes of non-reactive polyethylene with clear, flexible medical grade PVC. The pure LDPE inner layer is compatible for contact with many reagents. The exterior non-DEHP PVC layer provides easy assembly, feel, and bonding of traditional medical tubing. The tubing from Qosina, Edgewood, N.Y., (www.qosina.com) is available in coils of varying inner and outer diameters.