ISFET Ion-Sensitive Field Effect Transistor

Closed Special Notice Posted

This opportunity was awarded. See the award notice from , or the latest solicitation from .

Solicitation number
140G0125Q0205
Agency
Office of Acquisitions and Grants US Geological Survey, Department of the Interior
Responses due
Set-aside
No set-aside

Opportunity facts

NAICS code
334519 Other Measuring and Controlling Device Manufacturing
PSC
6632 Analysis Instruments, Medical Laboratory Use
Points of contact

Notice details come from SAM.gov. Updated .

About this opportunity

The U.S. Geological Survey's Texas-Oklahoma Water Science Center has issued a Sources Sought Notice seeking potential vendors capable of providing specialized ocean monitoring equipment. The agency requires an ISFET Ion-Sensitive Field Effect Transistor sensor system, specifically a SeapHOx Ocean CT sensor manufactured by Sea-Bird Scientific, to measure pH, conductivity, temperature, and dissolved oxygen in coastal water environments. This procurement falls under NAICS code 334519 (Other Measuring and Controlling Device Manufacturing) with a size standard of 600 employees. The notice was published by the Department of the Interior's U.S. Geological Survey Office of Acquisitions and Grants on August 18, 2025. This is strictly a market research initiative and does not constitute a solicitation for bids or proposals, nor does it guarantee any future procurement opportunities.

The primary objective is to identify qualified sources and assess market capabilities for supporting water quality research in coastal environments, particularly for a new Ocean and Coastal Acidification monitoring station in Galveston Bay. The sensor must meet precise technical specifications, including pH measurement accuracy of 0.05 within a 6.5-9 range, temperature resolution of 0.0001°C, conductivity measurement from 0-70 mS/cm, and dissolved oxygen accuracy of 0.1 mg/L. Interested parties must submit their responses by August 20, 2025, at 10:00 AM Mountain Time to the designated contact, Mindie Dixon at mdixon@usgs.gov. The government strongly encourages participation from small businesses, including Section 8(a), HUBZone, Service-Disabled Veteran-Owned, Women-Owned, and Economically Disadvantaged Women-Owned Small Business enterprises. Respondents should note that they will not receive notification regarding evaluation results, as this exercise is solely for market research purposes.

Notice text

This is a Sources Sought Notice only. This is not a request for proposal, but a survey to locate potential sources. This Sources Sought does not constitute an Invitation for Bids, Request for Proposals or a Request for Quotations, and is not to be construed as a commitment by the Government to issue an order or otherwise pay for the information solicited, nor is it a guarantee of a forthcoming solicitation or contract. It is for market research purposes only. Respondents will not be notified of the results of the evaluation.
The purpose of this Sources Sought Notice is to gain knowledge of interest, capabilities, and qualifications of various members of industry, to include the Small Business Community: Small Business, Section 8(a), Historically Underutilized Business Zones (HUB-Zone), Service-Disabled Veteran-Owned Small Business (SDVOSB), Women-Owned Small Business (WOSB), and Economically Disadvantaged Women-Owned Small Business (EDWOSB). The Government must ensure there is adequate competition among the potential pool of responsible contractors. Small business, Section 8(a), HUBZone, SDVOSB, WOSB, & EDWOSB businesses are highly encouraged to participate.
NAICS Code: 334519 Other Measuring and Controlling Device Manufacturing
NAICS Size Standard: 600
Subject: Sources Sought ¿ Brand Name or Equal to SeapHOx Ocean CT (20m pressure sensor) + pH + DO sensor. Manufacture: Sea-Bird Scientific
Sources Sought Closing Response Date: August 20, 2025, at 10:00 AM MT
Contact Point: Mindie Dixon-mdixon@usgs.gov
Objective: To find sources that are qualified to meet the supplies/services as listed below. Note that the specific requirements are subject to change prior to the release of any solicitation.
The U.S. Geological Survey Texas-Oklahoma Water Science Center) requires the purchase of a sensor to measure pH, conductivity, temperature and dissolved oxygen (CTD) for water quality research. This acquisition will be used for research on water quality in coastal environments, specifically for a new Ocean and Coastal Acidification (OCA) monitoring station in Galveston Bay. Salient Characteristics are attached.

Interested firms shall submit (1) NAME, ADDRESS, and PHONE NUMBER OF THE FIRM (including UEI (Unique Entity Identifier); (2) a CAPABILITY STATEMENT including (a) RECENT (within the last three fiscal years) RELEVANT (similar projects to this requirement) performance history (identify the name of the owner and their point(s) of contact with telephone and fax numbers, e-mail addresses; and (b) in what capacity (e.g., prime, subcontractor etc.) they performed the work; and (3) their SIZE STATUS.
Your company must have a UEI number and be registered on-line at the System for Award Management (SAM). You will also be required to provide your small business status information either via the On-line Representations and Certifications also located at the SAM.gov website before an award to your company can be made. Your on-line registration will cover any/all of your offers to the Federal Government, and only needs updated annually.

Responses to this source sought notice will be used by the Government to make appropriate acquisition decisions. All interested sources must respond to future solicitation announcements separately from responses to this market survey. Any solicitation that may be issued will be posted on the SAM.Gov. It is the responsibility of potential responders to monitor the site for additional information pertaining to this announcement.

Attachments

Files attached to this notice, newest first
File Type Posted
Salient_Characteristics_1.docx DOCX document

Notice history

Notices posted for this opportunity, newest first
Notice Type Posted
Brand name or Equal to SeapHOX Award Award Notice
Brand name or Equal to SeapHOX Latest solicitation Solicitation
ISFET Ion-Sensitive Field Effect Transistor This notice · Original Special Notice

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