Contour Flared End PVC Pump Tube 2tag 2.06mm ID Purple/Purple (PKT 6).Tag Colors: Purple/PurpleID mm: 2.06Wall Thickness mm: 0.86OD mm: 3.78Overall Length: 455mm (152mm spacing between tags)Number of Tubes Per Pack: 6Physical Properties: Thermoplastic, PVC based material with plasticizerMaterial: Made from Tygon R3603/R3607 or equivalent.Special Properties: Inexpensive all-around tubing for general laboratory applicationsChemical Compatibility: Excellent for aqueous solutions of the following acids and concentrations, up to 35% Nitric Acid, up to 37% Hydrochloric Acid, up to 25% Hydrofluoric Acid, up to 30% Hydrogen Peroxide.Limitations: Potential leaching of plasticizersGlass Expansion is ISO 9001:2015 certified by AB Certification, No. AU4501-9001