PVC Pump Tube 2tag 0.38mm ID Orange/Green (PKT 12).Tag Colors: Orange/GreenID mm: 0.38Wall Thickness mm: 0.91OD mm: 2.20Overall Length: 455mm (152mm spacing between tags)Number of Tubes Per Pack: 12Physical 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