Delivers 24-60% oxygen Different colours deliver different rates Flow rate: Varies with colour. The correct flow rate to use with each colour it is shown on mask, along with the percentage of oxygen delivered Types: BLUE = 2-4L/min = 24% O2 WHITE = 4-6L/min = 28% O2 YELLOW = 8-10L/min = 35% O2 RED = 10-12L/min = 40% O2 GREEN = 12-15L/min = 60% O2 Venturi masks are often used in COPD, where it is important not to over-oxygenate the patient.
