Top 46 Contractors in PSC H166: Quality Control Services: Instruments and Laboratory Equipment, FY2025

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Quest Diagnostics Incorporated Top agencies VA (Department of Veterans Affairs)	$467,714	16.1%	Rank history: not on the FY2021 list, #1 in FY2022, #1 in FY2023 and #2 in FY2024; up 1 since FY2024.
2	Health Systems Sciences, LLC Top agencies VA (Department of Veterans Affairs)	$355,875	12.3%	Rank history: not on the FY2021 list, #7 in FY2022, #6 in FY2023 and #6 in FY2024; up 4 since FY2024.
3	Tech62 Inc. Top agencies VA (Department of Veterans Affairs)	$290,500	10.0%	Rank history: #28 in FY2021, #28 in FY2022, not on the FY2023 list and #4 in FY2024; up 1 since FY2024.
4	Lancaster Foundry Supply Company Inc. Top agencies Navy (Department of the Navy)	$184,230	6.4%	Rank history: not on the FY2021 list, #11 in FY2022, #9 in FY2023 and #7 in FY2024; up 3 since FY2024.
5	Apex Instruments, Incorporated Top agencies EPA (Environmental Protection Agency)	$126,696	4.4%	Rank history: not on the FY2021–FY2024 lists; new.
6	Spectro Analytical Instruments, Inc. Top agencies DOI (Department of the Interior) EPA (Environmental Protection Agency)	$115,373	4.0%	Rank history: not on the FY2021–FY2023 lists and #8 in FY2024; up 2 since FY2024.
7	A-Bear Consult LLC Top agencies VA (Department of Veterans Affairs)	$88,947	3.1%	Rank history: #25 in FY2021, #16 in FY2022, not on the FY2023 list and #9 in FY2024; up 2 since FY2024.
8	HGS Engineering Inc. Top agencies VA (Department of Veterans Affairs)	$84,542	2.9%	Rank history: #13 in FY2021, #15 in FY2022, #14 in FY2023 and #17 in FY2024; up 9 since FY2024.
9	PPD Development LP Through Thermo Electron North America LLC Top agencies DOI (Department of the Interior) DOJ (Department of Justice)	$73,549	2.5%	Rank history: not on the FY2021–FY2023 lists and #5 in FY2024; down 4 since FY2024.
10	Rees Scientific Corporation Top agencies Navy (Department of the Navy)	$67,327	2.3%	Rank history: #14 in FY2021, #29 in FY2022, #40 in FY2023 and not on the FY2024 list; returned.
11	US Micro-Solutions Inc. Top agencies VA (Department of Veterans Affairs)	$65,628	2.3%	Rank history: not on the FY2021–FY2023 lists and #14 in FY2024; up 3 since FY2024.
12	Danaher Corporation Through Cepheid Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$64,323	2.2%	Rank history: not on the FY2021–FY2022 lists, #20 in FY2023 and #23 in FY2024; up 11 since FY2024.
13	College of American Pathologists Top agencies VA (Department of Veterans Affairs)	$62,042	2.1%	Rank history: not on the FY2021–FY2024 lists; new.
14	Payne Health Physics Corp Top agencies VA (Department of Veterans Affairs)	$51,965	1.8%	Rank history: not on the FY2021–FY2024 lists; new.
15	Safety Plus LLC Top agencies VA (Department of Veterans Affairs)	$48,910	1.7%	Rank history: not on the FY2021–FY2023 lists and #16 in FY2024; up 1 since FY2024.
16	Ansi National Accreditation Board LLC Top agencies Army (Department of the Army)	$42,700	1.5%	Rank history: #18 in FY2021, #37 in FY2022, #10 in FY2023 and #35 in FY2024; up 19 since FY2024.
17	Winergy LLC Top agencies VA (Department of Veterans Affairs)	$42,043	1.4%	Rank history: #3 in FY2021, #10 in FY2022, #17 in FY2023 and #18 in FY2024; up 1 since FY2024.
18	Arcadis U.s., Inc. Top agencies CPSC (Consumer Product Safety Commission)	$35,913	1.2%	Rank history: not on the FY2021–FY2023 lists and #19 in FY2024; up 1 since FY2024.
19	Allometrics Inc. Top agencies VA (Department of Veterans Affairs)	$34,128	1.2%	Rank history: not on the FY2021–FY2024 lists; new.
20	American Proficiency Institute Inc. Top agencies HHS (Department of Health and Human Services)	$31,794	1.1%	Rank history: not on the FY2021–FY2022 lists, #28 in FY2023 and #29 in FY2024; up 9 since FY2024.
21	Shimadzu Science Corporation Top agencies Navy (Department of the Navy)	$29,711	1.0%	Rank history: not on the FY2021–FY2023 lists and #50 in FY2024; up 29 since FY2024.
22	Nexus Group, LLC Top agencies DOI (Department of the Interior)	$28,800	1.0%	Rank history: not on the FY2021–FY2022 lists, #22 in FY2023 and #22 in FY2024; unchanged since FY2024.
23	Malvern Panalytical Inc. Top agencies DOI (Department of the Interior)	$25,880	0.9%	Rank history: not on the FY2021–FY2024 lists; new.
24	Assured Bio Labs, LLC Top agencies VA (Department of Veterans Affairs)	$23,984	0.8%	Rank history: not on the FY2021–FY2022 lists, #26 in FY2023 and #32 in FY2024; up 8 since FY2024.
25	Technical Safety Services, LLC Top agencies VA (Department of Veterans Affairs)	$22,094	0.8%	Rank history: #15 in FY2021, #9 in FY2022, #16 in FY2023 and not on the FY2024 list; returned.
26	Seps, Inc. Top agencies VA (Department of Veterans Affairs)	$16,385	0.6%	Rank history: not on the FY2021–FY2023 lists and #25 in FY2024; down 1 since FY2024.
27	Jeol Ltd. Top agencies Navy (Department of the Navy)	$15,247	0.5%	Rank history: not on the FY2021–FY2024 lists; new.
28	Technical Communities, Inc. Top agencies EPA (Environmental Protection Agency)	$14,921	0.5%	Rank history: not on the FY2021–FY2024 lists; new.
29	Bruker Scientific LLC Top agencies DOI (Department of the Interior)	$14,816	0.5%	Rank history: not on the FY2021–FY2023 lists and #37 in FY2024; up 8 since FY2024.
30	Emsl Analytical Inc. Top agencies VA (Department of Veterans Affairs)	$14,465	0.5%	Rank history: not on the FY2021 list, #33 in FY2022, #41 in FY2023 and #53 in FY2024; up 23 since FY2024.
31	LGC Clinical Diagnostics Inc. Top agencies HHS (Department of Health and Human Services)	$14,387	0.5%	Rank history: not on the FY2021–FY2024 lists; new.
32	Getinge USA Sales, LLC Top agencies Army (Department of the Army)	$14,363	0.5%	Rank history: not on the FY2021–FY2024 lists; new.
33	Cornerstone Commissioning, LLC Top agencies VA (Department of Veterans Affairs)	$13,325	0.5%	Rank history: not on the FY2021–FY2023 lists and #39 in FY2024; up 6 since FY2024.
34	Brinkmann Instruments Inc. Top agencies DOI (Department of the Interior)	$11,318	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
35	Ronnie Tomsick JR Top agencies VA (Department of Veterans Affairs)	$11,270	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
36	Secure Supply, Inc. Top agencies EPA (Environmental Protection Agency)	$11,215	0.4%	Rank history: not on the FY2021–FY2023 lists and #52 in FY2024; up 16 since FY2024.
37	Instrumentation Services Inc Top agencies VA (Department of Veterans Affairs)	$9,750	0.3%	Rank history: not on the FY2021–FY2023 lists and #44 in FY2024; up 7 since FY2024.
38	Compass Instruments Inc. Top agencies Navy (Department of the Navy)	$9,600	0.3%	Rank history: not on the FY2021–FY2022 lists, #45 in FY2023 and not on the FY2024 list; returned.
39	Jasco Support Co Ltd Top agencies Navy (Department of the Navy)	$6,931	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
40	Collaborative Testing Services, Inc. Top agencies Navy (Department of the Navy)	$5,509	0.2%	Rank history: not on the FY2021–FY2023 lists and #48 in FY2024; up 8 since FY2024.
41	Japan Quality Assurance Organization Top agencies Navy (Department of the Navy)	$3,999	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
42	Scientific Calibration, Inc. Top agencies Navy (Department of the Navy)	$3,668	0.1%	Rank history: #35 in FY2021, #36 in FY2022, #46 in FY2023 and #47 in FY2024; up 5 since FY2024.
43	Mitsuwa Sangyo KK Top agencies Navy (Department of the Navy)	$3,496	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
44	The Remi Group LLC Top agencies Smithsonian (Smithsonian Institution)	$1,278	<0.1%	Rank history: #9 in FY2021, #17 in FY2022, #24 in FY2023 and #26 in FY2024; down 18 since FY2024.
45	Mettler-Toledo International Inc. Through Mettler-Toledo LLC Top agencies Navy (Department of the Navy)	$935	<0.1%	Rank history: not on the FY2021–FY2023 lists and #56 in FY2024; up 11 since FY2024.
46	Hamilton Associates Inc. Top agencies Army (Department of the Army)	$26	<0.1%	Rank history: not on the FY2021–FY2023 lists and #51 in FY2024; up 5 since FY2024.

How this ranking works

• Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
• Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $2.9 million obligated before deobligations, so they never pass 100%.
• Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
• Fiscal year 2025 ran Oct 1, 2024 – Sep 30, 2025. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
• Rank changes compare with FY2024. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
• Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list. The step from FY2024 takes the color of the rank change beside it.
• Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

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