Questions and Answers for 12405B24Q0246.docx
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- Segmented Flow Analyzer (SFA)
- Solicitation number
- 12405B24Q0246
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This document contains Questions and Answers related to Solicitation Number 12405B24Q0246 for a Segmented Flow Analyzer (SFA) issued by the USDA, Agricultural Research Service in Raleigh, NC.
The key details are:
- The SFA must use air-segmented methods on up to 6 channels/analytes simultaneously, with 3 channels required to be installed at delivery. The required analytes are Ammonia, Nitrate (both 0.01ppm detection limit), and Phosphate.
- The system must have automated startup and shutdown capabilities, including electronic valves for the Nitrate channel.
- The system must utilize dialyzers for inline sample cleanup and a sampler with at least 300 positions.
- The system must not require physical debubbling and must have software to mathematically compensate for bubbles.
- Quotes are due by 4:00PM CST on June 27, 2024 and must include the solicitation number, item description, unit price, total price, and completed FAR 52.212-3 Offeror Representations and Certifications.
- Award will be made on a best value basis, with technical capability and past performance being more important than price.
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Questions and Answers for 12405B24Q0246
1. The name of the bid is for a Segmented Flow Analyzer. To ensure reduced reagent consumption, can you confirm air-segmented methods are required on all channels on the system as opposed to flow-injection methods? Yes, air-segmented methods required.
1. The specifications state the system must be capable of running up to 6 channels/analytes simultaneously. How many complete channels (chemistry manifold + detector) are required to be installed on the system at delivery? 3 channels on delivery.
1. What are the required analytes available for detection on the system, and what are the required detection limits? Ammonia, Nitrate, both 0.01ppm. Also, phosphate, however I do not have a frame of reference for this analyte so we will need guidance from the vendor.
1. Total, unattended startup requires a platen that can automatically engage, as well as reagent valves that can start with a wash solution, and then switch to reagents once the baseline is steady. Complete, unattended shutdown requires reagent valves that can switch to wash solution to rinse out the manifolds and a platen that can automatically disengage. For the Nitrate channel (System 1), this would also require an electronic valve to turn on/off to protect the cadmium reduction coil. Can you confirm that this hardware, as well as the software to automate it, is required? Yes.
1. Should each channel utilize a dialyzer to perform inline sample cleanup and expand the concentration range? Yes.
1. Should the sampler for the system be able to accommodate up to 360 samples plus a calibration and standards rack? Not required. However, minimum 300 position sampler (total for samples and calibration, etc.)
1. The specifications state that the system should not need physical debubbling before the flowcell and the software must be capable of mathematically compensating for bubbles. Can you confirm that these features are required on all channels? Yes.
File details come from the government source that posted it. Updated .