MASS SPECTROMETER: Sources Sought (Special Notice) 140G0319Q0142 The U.S. Geological Survey (USGS) is conducting market research to determine the availability of a NexION 2000B Inductively Couples Plasma Mass Spectrometer, (ICP/MS) to replace an existing USGS ICP/MS nearing the end of its life cycle. Any replacement ICP/MS unit must match and adapt flawlessly to the existing USGS ICP/MS system in place. This sources sought announcement is not a request for quote or proposal and the Government is not committed to award of a purchase order or contract pursuant to this announcement. The information resulting from this market research is simply for planning purposes to assist the Government in determining its acquisition strategy. The Government will not pay for any costs incurred in the preparation of information for responding to this notice. The North American Industry Classification System (NAICS) 334516, Analytical Laboratory Instrument Manufacturing and associated size standard 1,000 Employees apply to this announcement. All responsible sources may submit capabilities statement detailing the ability of their service to meet the statement of work included with this announcement. Responses to this announcement shall only be accepted through electronic mail addressed to [email protected] and must be uploaded and received in their entirety no later than 07/09/2019 1300 EDT. Responses submitted by hardcopy or the FedConnect web portal or the FedConnect Message Center shall not be accepted or considered. Salient Characteristics: A. General requirements: The system must be a fully computer controlled, benchtop ICP-MS system that can accept input from automated methylmercury and total mercury systems, a HPLC unit, and a flow injection for atomic spectroscopy system (FIAS). B. Technical Requirements ¿ Sample introduction: Interchangeable gas/liquid. For gas samples: argon carrier from hyphenated instruments connected to nebulizer argon flow. For liquid samples: 4-channel low-pulse peristaltic pump equipped with a cyclonic sample introduction system with concentric nebulizer. Optimization of nebulizer gas flow for low method detection limit (MDL, i.e. for Hg MDL<30ppq) ¿ Plasma generation: Load coil connected to 34MHz radio frequency (RF) generator. ¿ Vacuum system: Quadruple stage utilizing triple inlet turbomolecular pump. ¿ Interface: Three platinum cone system to collimate the ion beam. ¿ Quadrupole: a) Quadrupole Ion Deflector (QID) for selectively turn the beam at 90 degrees for neutral and polyatomic reduction; b) universal cell (UCT) operating in standard, collision or reaction mode for interference removal, equipped with linearly accelerating axial field (AFT) to eliminate matrix effects; c) scanning quadrupole to reject reaction by-products and ensure clean and controlled reactions and three cell gas channels to target the various interferences; and d) thermally stable metal alloy quadrupole with a 2.5 MHz thermally stabilized quadrupole power supply producing hyperbolic fields for abundance sensitivity, variable resolution and mass stability. ¿ Detector: Simultaneous dual mode (pulse and analog) ¿ Data acquisition: Speed 100,000 points/sec ¿ Interface software for hyphenated systems: Chromatography data station (CDS) with optional software modules for data acquisition, processing and instrument control of all system components from a single software interface, simultaneous data acquisition, advanced integration features and data exporting in various formats. ¿ Detection limit: Less than ppt (parts per trillion) depending on analyte, i.e. for Hg < 30ppq (parts per quadrillion). ¿ Power requirements: Instrument: 200-240 V (+/- 10%), 50/60 Hz, single phase. ¿ Vacuum pump: 12A single-phase 200-240V outlet. Mains cord terminated by an IEC 60309 connector rated 30A by UL. ¿ Dimensions: Benchtop (i.e. Width 81 cm, Depth 69 cm, Height 75 cm, weight 150 Kg)

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