PRESSURE CORRECTION To determine the pressure correction for these cells, we counted each cell for 14 hours at the 760.5 mm Hg. pressure we received them using the calibration factors we established at 582.0 mm Hg. These values are expressed in pCi/L on the left side of the table below. We then briefly loosened the bottle caps of each cell to release the over pressure and normalize the cell pressure at 590.3 mm Hg. These 222Radon values are multiplied by 1.28833 to compensate for the 222Radon loss when the over pressure was released.
EML reported 570 Bq/m our 560 was 0.98 of the EML Mean