National Institute of Standards & Technology, Acquisition & Assistance Div., Bldg. 301, Rm B117, Gaithersburg, MD 20899

66 -- NUCLEAR MAGNETIC RESONANCE SPECTROMETER SOL 52SBNB8C1105 DUE 080798 POC Linda Shariati, Contract Specialist, (301) 975-5053, Lisa K. Jandovitz, Contracting Officer, (301) 975-6344 WEB: NIST Contracts Homepage, http://www.nist.gov/admin/od/contract/contract.htm. E-MAIL: NIST Contracts Office, Contract@nist.gov. The National Institute of Standards and Technology (NIST) intends to procure a complete nuclear magnetic resonance spectrometer (NMR). NIST requires a state-of-the-art characterization of polymers, both by solid-state and liquid-state nuclear magnetic resonance techniques. The NMR spectrometer will incorporate a magnet whose operating magnetic field is 7.0 plus or minus 0.1 Tesla. At such a field, the nominal nmr resonance frequency for protons is 300 MHZ, hence we will refer to this spectrometer as a 300 MHZ NMR spectrometer. Intended applications for this spectrometer emphasize the study of solid samples; hence, the ability to conduct state-of-the-art solid-state NMR experiments is the most important consideration. At the same time, some ability to examine samples that are in the solution state is also desired; hence the console should be equipped with all of the basic features required for performing experiments on both solid and liquid samples. A complete spectrometer is sought and this includes, but is not necessarily limited to: superconducting magnet with room temperature shims and reasonable cryogen hold times; console which includes the functions of providing: (a) gated, highly stable, 1-kW-level rf pulses (with fast-response, software-controlled selection of phase, frequency and amplitude) for excitation of the nuclei; (b) sensitive circuitry for the detection of low-level nuclear signals without unwanted interference; (c) intelligent control of the timing of the rf pulses; (d) signal-averaging capabilities; (e) temperature control of the sample; (f) spinning-speed control of the sample, when called for; (g) deuterium-based magnetic-field-locking; and (h) control of currents used for the room-temperature magnetic-field shims. An optional capability is to apply magnetic gradient pulses on solution-state samples. Five different probes, containing the samples which are inserted into the magnet for study, are required. Each of them is to be capable of operation over a variable temperature range. The probes are: 1) A dual-frequency, cross-polarization/magic-angle-spinning (CPMAS) probe designed for spinning samples up to 12 kHz and applying rf fields up to 90 kHz nutation frequencies for proton decoupling, 2) A second dual-frequency CPMAS probe, emphasizing sensitivity, and capable of applying rf fields up to 65 kHz proton nutation frequencies and magic-angle-spinning (MAS) frequencies to 7 kHz. Low background signals are sought on both the foregoing probes; 3) A single-frequency MAS probe, tunable from proton to 19F frequencies, including the capability for MAS up to 10 kHz, and proton nutation frequencies up to 160 kHz. Low proton background signals are very important for this probe; 4) A probe for static deuterium-containing samples capable of providing deuterium nutation frequencies of 100 kHz; and 5) A high resolution, broadband-observe probe for liquid-state samples in 10 mm tubes. In addition, a modern computer (of the vendor=s choice but expected to be more powerful than a PC) must also be provided which is capable of processing and analyzing data as well as being capable of providing the proper commands and output for spectrometer control. The capacity for conveniently storing and archiving data must also be present. The rf generation hardware on this spectrometer must include 3 independent channels for the excitation of up to 3 different nuclei in a single experiment. All necessary equipment for performing variable temperature experiments with the solid-state probes as well as the liquid-state probe must be included. A desk-top monitoring device which shows rf pulse activity (e.g. a remote status module) should be included. A spinning-speed controller for the MAS probes is required. This controller should be capable of spinning a sample up to its desired frequency and stabilizing its frequency to plus or minus one part in two thousand. The console should have surge protection installed. The console should be able to operate stably with power-line voltage changes of plus or minus four percent of the nominal line voltages of 115V and 220V for single-phase service and 208V for 3-phase service. If rf outputs are not stable over this range, then constant voltage transformers should be supplied for those items which are sensitive to such voltage changes. The spectrometer must be constructed in such a way that, following a transient loss of power in the AC line, the high-power rf outputs of the amplifiers are prevented from entering an uncontrolled state of continuous rf broadcasting toward the probe once the line voltage returns. The equipment necessary for tuning and matching the probes must be provided. Warranty (parts and labor) for at least one year following acceptance. A 30 day acceptance testing period after the installation shall apply. Software support and updates for one year will be required as will one complete set of electronic circuit diagrams for the spectrometer. A trade-in credit for the obsolete spectrometer (Bruker CXP200) will be requested. The Contractor shall install the spectrometer andperform a capability demonstration after installation. This demonstration shall verify that the system meets the requirements in the contract. The Government requires delivery 180 calendar days after award of the contract. FOB Destination -- Gaithersburg, Maryland. All responsible sources may submit a proposal to the Request for Proposal (RFP) package and all proposals will be considered. A Request for Proposal (RFP) package will be available on or about July 9, 1998 Requests for a copy of the RFP should be in writing to the address above. If this announcement is being viewed through the Internet at http://www.nist.gov/admin/od/contract/cbd.htm, a request for a copy of the RFP can be submitted electronically by using the email link below. Facsimilie requests for the RFP are acceptable, however, facsimilie responses/submissions to the RFP (the technical proposal, price proposals, etc) will not be accepted. The facsimile number is (301)963-7732. Responses will be due approximately thirty days after issuanceof the RFP. The Government anticipates awarding a fixed price contract. The SIC code is 3826 and the size standard is 500 employees. This is not a small business set-aside. If you have any questions regarding this solicitation, please contact Linda Shariati at (301) 975-5053. See Numbered Notes 12 and 26. Posted 06/24/98 (0175)

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