Table 4 zeta potential (mV) of the inner surface of every tubings at pH = 5.0 (PVC: Polyvinylchloride; PE: Polyethylene; PU: Polyurethane; SEBS: Styrene-Ethylenebutadiene-Styrene; TPO: Thermoplastic olefin).

From: Impact of alternative materials to plasticized PVC infusion tubings on drug sorption and plasticizer release

classPVCPVC/PEPVC/PUPVC/SEBSSEBSTPO
thermoplasticthermoplasticthermoplasticthermoplastic elastomerthermoplastic elastomerthermoplastic elastomer
co-extrudednoPVCPVCPVCnono
pH5.064.985.065.045.005.04
zeta potential (mv)−27.4−37.0−9.5−39.6−33.1−30.1