SAMPLER: FILTER + IMPINGERS
(1-μm PTFE membrane and 2 impingers,
each with 20 mL 1% sodium bisulfite
solution)
FLOW RATE: 0.2 to 1 L/min
VOL-MIN: 1 L @ 3 ppm
-MAX: 100 L
SHIPMENT: transfer samples to low-density
polyethylene bottles before shipping
SAMPLE
STABILITY: 30 day @ 25 °C [1]
BLANKS: 2 to 10 field blanks per set