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AQR Color-Tec Method AQR Color-Tec Method - State Coalition for ...

AQR Color-Tec Method AQR Color-Tec Method - State Coalition for ...

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<strong>AQR</strong> <strong>Color</strong>-<strong>Tec</strong> <strong>Method</strong>Purge and AnalysisAmbient air entersthrough carbon filterTygonTubing<strong>Color</strong>imetricTubeHand-Operated VacuumPump (100cc)PumpHandleCarbonFilterPurgeNeedle(long)Headspace(~30%)WaterSampleAirBubbles40 ml VOAVialPurged volatile compounds passthrough the headspace, needle,and tubing into the colorimetrictube where they react and causea distinct color changePCE MoleculesPump Stand

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