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Preparation/Analytical Method Verification <br /> The SOP stated above has been prepared based on technical research and testing conducted by <br /> GEL Laboratories, LLC. and with guidance from the regulatory documents listed in this <br /> "Method/Analysis Information" section. <br /> System Configuration <br /> The Hardness as CaCO3 is calculated from Calcium and Magnesium results. <br /> The Metals analysis-ICP was performed on a P E 4300 Optima radial/axial-viewing inductively <br /> coupled plasma atomic emission spectrometer. The instrument is equipped with a Burgener <br /> nebulizer, cyclonic spray chamber, and yttrium or scandium internal standard. Operating <br /> conditions for the ICP are set at a power level of 1500 watts. The instrument has a peristaltic <br /> pump flow rate of 1.4L/min, argon gas flows of 15 L/min and 0.2 L/min for the torch and <br /> auxiliary gases, and a flow setting of 0.65L/min for the nebulizer. <br /> The Metals analysis-ICP was performed on a PE 7300 Optima radial/axial-viewing inductively <br /> coupled plasma atomic emission spectrometer. The instrument is equipped with a Burgener <br /> nebulizer, cyclonic spray chamber, and yttrium or scandium internal standard. Operating <br /> conditions for the ICP are set at a power level of 1500 watts. The instrument has a peristaltic <br /> pump flow rate of 1.4L/min, argon gas flows of 15 L/min and 0.2 L/min for the torch and <br /> auxiliary gases, and a flow setting of 0.65L/min for the nebulizer. <br /> The Metals analysis - ICPMS was performed on a Perkin Elmer ELAN 6100E inductively <br /> coupled plasma mass spectrometer(ICP-MS). The instrument is equipped with a cross-flow <br /> nebulizer, quadruple mass spectrometer, and dual mode electron multiplier detector. Internal <br /> standards of scandium, germanium, indium, tantalum, and/or lutetium were utilized to cover the <br /> mass spectrum. Operating conditions are set at 1400W power and combined argon pressures of <br /> 360+/-7 kPa for the plasma and auxiliary gases, and 0.85 L/min carrier gas flow, and an initial <br /> lens voltage of 5.2. <br /> The Metals analysis - ICPMS was performed on a Perkin Elmer ELAN 9000 inductively coupled <br /> plasma mass spectrometer(ICP-MS). The instrument is equipped with a cross-flow nebulizer, <br /> quadruple mass spectrometer, and dual mode electron multiplier detector. Internal standards of <br /> scandium, germanium, indium, tantalum, and/or lutetium were utilized to cover the mass <br /> spectrum. Operating conditions are set at 1400W power and combined argon pressures of 360+/- <br /> 7 kPa for the plasma and auxiliary gases, and 0.85 L/min carrier gas flow, and an initial lens <br /> voltage of 5.2. <br /> The Metals analysis-Mercury was performed on a Perkin-Elmer Flow Injection Mercury System <br /> (FIMS-100) automated mercury analyzer. The instrument consists of a cold vapor atomic <br /> absorption spectrometer set to detect mercury at a wavelength of 253.7 nm. Sample introduction <br /> through the flow injection system is performed via a peristaltic pump at 9 mUmin and nitrogen <br /> carrier gas rate of 80 mUmin. <br /> Page 19 of 99 <br />