408 – NO

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The Model 408 Nitric Oxide Calibration Source™ is a portable source of nitric oxide that allows you to calibrate any nitric oxide monitor. The instrument scrubs NO from ambient air and produces either zero air or air having a mixing ratio of NO in the range 10-1,000 ppb. The nitric oxide is produced by photolysis of nitrous oxide supplied by a “Whippit” cartridge, lecture bottle or small tank of N2O.