(b)(4).During laboratory evaluation, the flowmeter met specification for flow accuracy during lab testing.The product surveillance technician (pst) installed the flowmeter into a lab-use only (luo) epgs.He calibrated the epgs, set the o2 % at 100 and tested the flowmeter at 1, 5 and 9 liters per minute (l/min).The flowmeter met specification as shown below: set point = 1 l/min ccm = 0.99 l/min external flowmeter = 0.99 l/min specifications = 0.9-1.1 l/min.Set point = 5 l/min ccm = 4.99 l/min external flowmeter = 5.04 l/min specifications = 4.8-5.2 l/min.Set point = 9 l/min ccm = 8.99 l/min external flowmeter = 9.12 l/min specifications = 8.7-9.3 l/min.The pst observed nothing that would cause failure.
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