The VOC Zeroing Tubes are sealed, single-use, zeroing tubes with a high quality filter medium used to remove any VOC contamination present in ambient air during instrument zeroing procedures. These tubes are particularly designed for zeroing the ppbRAE Plus and other photoionization detectors (PIDs). Calibration should be performed at the same temperature, humidity, and flow as the measurement. See Technical Notes 150, 172 and 178 (below) for more details on use and how to connect other monitors.
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Technical Notes