| | YSI INC | — | IDC | $35,000,000 | US GEOLOGICAL SURVEY | US GEOLOGICAL SURVEY | — | 334513Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables | 6695COMBINATION AND MISCELLANEOUS INSTRUMENTS | Jun 2, 2026 | Jun 2, 2026 | — |
| | YSI INC | — | BPA | $100,000 | BUREAU OF RECLAMATION | BUREAU OF RECLAMATION | — | 811210Electronic and Precision Equipment Repair and Maintenance | J052MAINT/REPAIR/REBUILD OF EQUIPMENT- MEASURING TOOLS | May 15, 2024 | Jun 1, 2024 | May 31, 2029 |
| | YSI INC | BPA SETUP FOR YSI PROBES, PARTS AND MAINTENANCE | BPA | $450,000 | BUREAU OF RECLAMATION | BUREAU OF RECLAMATION | — | 334513Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables | 6640LABORATORY EQUIPMENT AND SUPPLIES | Jul 7, 2021 | Jul 15, 2021 | — |
| | YSI INC | — | IDC | $49,600,000 | US GEOLOGICAL SURVEY | US GEOLOGICAL SURVEY | — | 334513Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables | 6695COMBINATION AND MISCELLANEOUS INSTRUMENTS | Feb 26, 2021 | Feb 26, 2021 | — |
| | YSI INC | — | IDC | $24,150,000 | US GEOLOGICAL SURVEY | US GEOLOGICAL SURVEY | — | 334513Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables | 6695COMBINATION AND MISCELLANEOUS INSTRUMENTS | Feb 16, 2017 | Feb 16, 2017 | Feb 28, 2022 |
| | YSI INC | IGF::OT::IGF BPA FOR H/H EQUIPMENT | BPA | $125,000 | DEPT OF THE ARMY | DEPT OF THE ARMY | — | 334519Other Measuring and Controlling Device Manufacturing | 5895MISCELLANEOUS COMMUNICATION EQUIPMENT | Jul 20, 2016 | Jul 20, 2016 | Jul 12, 2022 |
| | YSI INC | YSI MAINTENANCE AND REPLACEMENT PARTS BPA. | BPA | $750,000 | BUREAU OF RECLAMATION | BUREAU OF RECLAMATION | — | 334513Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables | 6640LABORATORY EQUIPMENT AND SUPPLIES | Jul 14, 2016 | Jul 15, 2016 | — |
| | YSI INC | IGF::OT::IGF TECHNICAL SUPPORT FOR HYDROGRAPHIC SURVEY EQUIPMENT. | BPA | $500,000 | DEPT OF THE ARMY | DEPT OF THE ARMY | — | 334511Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing | J070 | Jul 24, 2015 | Aug 1, 2015 | Jul 31, 2020 |
| | YSI INC | — | IDC | $0 | US GEOLOGICAL SURVEY | US GEOLOGICAL SURVEY | — | 334513Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables | 6695COMBINATION AND MISCELLANEOUS INSTRUMENTS | Feb 28, 2013 | Mar 1, 2013 | — |
| | YSI INC | ISSUE AN AMENDMENT AGAINST G10PA00004 | BPA | $0 | US GEOLOGICAL SURVEY | US GEOLOGICAL SURVEY | — | 334513Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables | J039MAINT/REPAIR/REBUILD OF EQUIPMENT- MATERIALS HANDLING EQUIPMENT | Dec 7, 2010 | Dec 7, 2010 | Mar 1, 2014 |
| | YSI INC | YSI PARTS AND SERVICES FOR WATER PROBES. | BPA | $0 | BUREAU OF RECLAMATION | — | SBA | 334513Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables | Q301MEDICAL- LABORATORY TESTING | Sep 29, 2009 | Sep 29, 2009 | Sep 28, 2014 |
| | YSI INC | 01 ARGONAUT-SW ADVANCED DOPPLER VELOCITY PROFILERS (5) | IDC | $30,026 | AGRICULTURAL RESEARCH SERVICE | — | — | 334513Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables | 6695COMBINATION AND MISCELLANEOUS INSTRUMENTS | Jan 23, 2009 | Jan 23, 2009 | Mar 31, 2009 |
| | YSI INC | WATER QUALITY MONITORING EQUIPMENT | IDC | $0 | US GEOLOGICAL SURVEY | — | — | 334513Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables | 6695COMBINATION AND MISCELLANEOUS INSTRUMENTS | Jun 13, 2008 | Jun 13, 2008 | — |
| | YSI INC | 05-4552-5077 BPA-YSI INC REPAIR YSI PRODUCTS INCLUDING METERS, SONDES AND HAND HELD INSTRUMENTS | BPA | $0 | US GEOLOGICAL SURVEY | — | — | 334513Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables | 6625ELECTRICAL AND ELECTRONIC PROPERTIES MEASURING AND TESTING INSTRUMENTS | Apr 13, 2005 | Apr 5, 2005 | Sep 30, 2009 |
| | YSI INC | — | FSS | $0 | FEDERAL ACQUISITION SERVICE | — | — | — | — | Oct 15, 1992 | Oct 15, 1992 | — |