PSC B504: Chemical/Biological Studies and Analysis
Service code
Code facts
- Spend category
- Professional Services Management Advisory Services
- Part of
-
-
B
- B5
-
B
- Contract awards
- 71 In the last 12 months
- Contract obligations
- $59,789,484 In FY2025
PSC codes and definitions come from the GSA PSC Manual and contract spending from SAM.gov/FPDS.
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $201,822 |
| FY2026 | $53,428,931 |
| FY2025 | $59,789,484 |
| FY2024 | $82,495,303 |
| FY2023 | $87,201,974 |
Top contractors by obligations
| Rank | Contractor | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Merrick & Company | $25,070,798 | |
| 2 | ICF Incorporated, L.L.C. | $5,750,779 | |
| 3 | Techlaw Consultants Inc. | $5,495,680 | |
| 4 | Serco Inc. | $2,780,697 | |
| 5 | Mriglobal | $2,207,198 | |
| 6 | President And Fellows Of Harvard College | $2,180,177 | |
| 7 | Environmental Assessment Services, LLC | $1,369,295 | |
| 8 | Aptargroup Inc. | $1,175,000 | |
| 9 | Battelle Memorial Institute | $994,252 | |
| 10 | Bryce Space And Technology, LLC | $840,620 |
See the full FY2025 ranking of PSC B504 contractors, by parent company.
Top funding agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Department of Agriculture | $23,494,079 | |
| 2 | Environmental Protection Agency | $14,023,407 | |
| 3 | Department of Health and Human Services | $5,732,763 | |
| 4 | Department of Homeland Security | $3,306,565 | |
| 5 | Department of the Army | $2,616,103 | |
| 6 | Department of Defense | $2,208,598 | |
| 7 | Department of the Interior | $803,160 | |
| 8 | Department of Commerce | $659,536 | |
| 9 | Consumer Product Safety Commission | $235,723 | |
| 10 | Department of the Navy | $231,607 |
Top NAICS codes by obligations
| Rank | NAICS code | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | 541380 Testing Laboratories and Services | $43,014,407 | |
| 2 | 541714 Research and Development in Biotechnology (except Nanobiotechnology) | $4,219,054 | |
| 3 | 541620 Environmental Consulting Services | $2,293,316 | |
| 4 | 541690 Other Scientific and Technical Consulting Services | $2,159,912 | |
| 5 | 325412 Pharmaceutical Preparation Manufacturing | $1,010,270 | |
| 6 | 541611 Administrative Management and General Management Consulting Services | $894,369 | |
| 7 | 541990 All Other Professional, Scientific, and Technical Services | $480,990 | |
| 8 | 513210 Software Publishers | $195,000 | |
| 9 | 611310 Colleges, Universities, and Professional Schools | $104,879 | |
| 10 | 541511 Custom Computer Programming Services | $46,589 |
Contract obligations by state
| Rank | Place of performance | Obligated, last 12 months | Share |
|---|---|---|---|
| 1 | Kansas | $23,434,791 | |
| 2 | Virginia | $5,634,179 | |
| 3 | Illinois | $3,038,762 | |
| 4 | Massachusetts | $2,886,645 | |
| 5 | New York | $2,854,937 | |
| 6 | Colorado | $2,800,090 | |
| 7 | Washington | $2,003,188 | |
| 8 | California | $1,258,227 | |
| 9 | New Jersey | $1,192,706 | |
| 10 | Texas | $1,162,799 | |
| 11 | Georgia | $1,034,389 | |
| 12 | Oregon | $951,272 | |
| 13 | Ohio | $940,357 | |
| 14 | Maryland | $917,080 | |
| 15 | Florida | $615,439 | |
| 16 | Mississippi | $591,922 | |
| 17 | North Carolina | $463,463 | |
| 18 | Michigan | $293,213 | |
| 19 | Indiana | $283,778 | |
| 20 | Missouri | $217,774 | |
| 21 | Alaska | $98,450 | |
| 22 | Pennsylvania | $68,320 | |
| 23 | Kentucky | $66,519 | |
| 24 | District of Columbia | $49,819 | |
| 25 | New Mexico | $37,862 | |
| 26 | Iowa | $33,764 | |
| 27 | Maine | $24,918 | |
| 28 | Minnesota | $16,720 | |
| 29 | Oklahoma | $10,396 | |
| 30 | Nevada | $1,881 |
Show all 30
Shares are of everything obligated under PSC B504 in the last 12 months before deobligations, including work performed abroad or with no place of performance on record.
Contract opportunities
Show 40 more
Latest 50 of 490 listed here. See the rest on GovTribe.
Quick answers
What is PSC B504?
PSC B504 is Chemical/
How much do federal agencies spend under PSC B504?
Federal contracts under PSC B504 obligated $59,789,484 in fiscal year 2025 and $283,117,514 in fiscal years 2023 through 2027.
Who are the largest contractors under PSC B504?
The contractors with the most obligated under PSC B504 in fiscal years 2026 and 2027 are Merrick & Company ($25,070,798); ICF Incorporated, L.L.C. ($5,750,779); and Techlaw Consultants Inc. ($5,495,680).
Which agencies buy the most under PSC B504?
The agencies that obligated the most under PSC B504 in fiscal years 2026 and 2027 are Department of Agriculture ($23,494,079), Environmental Protection Agency ($14,023,407) and Department of Health and Human Services ($5,732,763).
Which NAICS codes are used with PSC B504?
The NAICS codes with the most obligated under PSC B504 in fiscal years 2026 and 2027 are 541380 Testing Laboratories and Services, 541714 Research and Development in Biotechnology (except Nanobiotechnology) and 541620 Environmental Consulting Services.
Where is the work under PSC B504 performed?
By place of performance, the states with the most contract obligations under PSC B504 over the last 12 months are Kansas ($23,434,791), Virginia ($5,634,179) and Illinois ($3,038,762).
What is the latest contract opportunity under PSC B504?
The latest contract opportunity under PSC B504 is Chemical Nutrient Analysis Service for Combat Feeding Division (CFD), solicitation from ACC Aberdeen Proving Ground, posted October 15, 2026.
On GovTribe
See everything under PSC B504
- Federal contract opportunities, awards and IDVs under this code
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