Top 100 Contractors in PSC 6630: Chemical Analysis Instruments, FY2021

Name: Top 100 Contractors in PSC 6630: Chemical Analysis Instruments, FY2021
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2020 – Sep 30, 2021 Code page on GovTribe

The top 10 won 59% of FY2021 PSC 6630 contract dollars

Contract obligations: $120,754,811 Net of deobligations, by contracts coded PSC 6630
Contractors: 283 Parent companies with an obligation
Largest contractor: Danaher Corporation $21.7 million, 15.1% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Danaher Corporation 9 awardees, including Beckman Coulter, Inc., Cepheid and Leica Microsystems Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) Army (Department of the Army)	$21,662,378	15.1%	Rank history: #3 in FY2022, #1 in FY2023, #2 in FY2024 and #13 in FY2025; unchanged since FY2020.
2	Abbott Laboratories 4 awardees, including Abbott Molecular Inc. and Abbott Rapid Diagnostics Informatics, Inc. Top agencies VA (Department of Veterans Affairs) USAF (Department of the Air Force) DOJ (Department of Justice)	$20,065,380	14.0%	Rank history: #2 in FY2022, #2 in FY2023, #1 in FY2024 and #3 in FY2025; unchanged since FY2020.
3	Siemens Aktiengesellschaft 4 awardees, including Siemens Healthcare Diagnostics Inc. and Siemens Healthcare SL. Top agencies VA (Department of Veterans Affairs) Army (Department of the Army) USAF (Department of the Air Force)	$14,472,345	10.1%	Rank history: #4 in FY2022, #3 in FY2023, #10 in FY2024 and not on the FY2025 list; unchanged since FY2020.
4	Roche Holding AG Through Roche Diagnostics Corporation Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) Navy (Department of the Navy)	$13,592,215	9.5%	Rank history: #5 in FY2022, #5 in FY2023, #6 in FY2024 and not on the FY2025 list; up 4 since FY2020.
5	Thermo Electron Corporation 8 awardees, including Thermo Electron North America LLC, Thermo Orion Inc. and Thermo Scientific Portable Analytical Instruments Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) VA (Department of Veterans Affairs)	$4,024,074	2.8%	Rank history: #6 in FY2022, #6 in FY2023 and not on the FY2024–FY2025 lists; up 6 since FY2020.
6	Johnson & Johnson Through Ortho-Clinical Diagnostics, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) USAF (Department of the Air Force)	$2,834,461	2.0%	Rank history: #12 in FY2022, #8 in FY2023, #21 in FY2024 and not on the FY2025 list; up 15 since FY2020.
7	Grifols Diagnostic Solutions Inc. Through Gen-Probe Incorporated Top agencies VA (Department of Veterans Affairs)	$2,491,274	1.7%	Rank history: #13 in FY2022 and not on the FY2023–FY2025 lists; up 57 since FY2020.
8	Agilent Technologies, Inc. 5 awardees, including Biotek Instruments, Inc. Top agencies Army (Department of the Army) USDA (Department of Agriculture) DHS (Department of Homeland Security)	$2,097,836	1.5%	Rank history: #10 in FY2022, #18 in FY2023 and not on the FY2024–FY2025 lists; down 1 since FY2020.
9	Stago International Through Diagnostica Stago Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) Navy (Department of the Navy)	$2,077,545	1.4%	Rank history: #16 in FY2022, #21 in FY2023, #25 in FY2024 and not on the FY2025 list; up 7 since FY2020.
10	Compagnie Merieux Alliance 3 awardees, including Biomerieux Inc., Biofire Diagnostics LLC and Biofire Defense LLC Top agencies VA (Department of Veterans Affairs) Army (Department of the Army) USAF (Department of the Air Force)	$1,882,458	1.3%	Rank history: #9 in FY2022, #42 in FY2023, #17 in FY2024 and not on the FY2025 list; up 2 since FY2020.
11	Illumina, Inc. Top agencies Navy (Department of the Navy) HHS (Department of Health and Human Services)	$1,829,809	1.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
12	Tosoh Corporation Through Tosoh Bioscience, Inc. Top agencies VA (Department of Veterans Affairs)	$1,663,611	1.2%	Rank history: #24 in FY2022, #24 in FY2023, #32 in FY2024 and not on the FY2025 list; up 29 since FY2020.
13	Government Scientific Source Inc. Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice) Army (Department of the Army)	$1,606,345	1.1%	Rank history: #17 in FY2022, #9 in FY2023, #11 in FY2024 and #7 in FY2025; down 3 since FY2020.
14	Sysmex Corporation Through Sysmex America, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) USAF (Department of the Air Force)	$1,389,689	1.0%	Rank history: #18 in FY2022, #14 in FY2023, #50 in FY2024 and not on the FY2025 list; up 4 since FY2020.
15	Becton, Dickinson and Co 2 awardees Top agencies VA (Department of Veterans Affairs) USDA (Department of Agriculture) Army (Department of the Army)	$1,373,171	1.0%	Rank history: #28 in FY2022, #26 in FY2023, #56 in FY2024 and not on the FY2025 list; up 51 since FY2020.
16	Bruker Corporation 3 awardees, including Bruker Scientific LLC, Bruker Detection Corp and Bruker Biospin Corp Top agencies HHS (Department of Health and Human Services) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,312,087	0.9%	Rank history: not on the FY2022 list, #30 in FY2023, #28 in FY2024 and #18 in FY2025; up 16 since FY2020.
17	Telectro-Mek Inc. Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$1,289,167	0.9%	Rank history: #19 in FY2022, #33 in FY2023, #31 in FY2024 and #12 in FY2025; up 26 since FY2020.
18	Ultima Genomics, Inc. Top agencies HHS (Department of Health and Human Services)	$1,025,000	0.7%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
19	Laboratory Corporation of America Holdings Through Laboratory Corporation of America Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice)	$990,074	0.7%	Rank history: not on the FY2022–FY2025 lists; up 41 since FY2020.
20	Luminex Corp 3 awardees, including Diasorin Inc. and Nanosphere, LLC Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) Army (Department of the Army)	$978,520	0.7%	Rank history: #21 in FY2022, not on the FY2023 list, #39 in FY2024 and not on the FY2025 list; up 64 since FY2020.
21	Micro Systemation AB (Publ) Through Msab Incorporated Top agencies DHS (Department of Homeland Security)	$940,702	0.7%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
22	Franklin Young International, Incorporated Top agencies VA (Department of Veterans Affairs) USDA (Department of Agriculture) HHS (Department of Health and Human Services)	$731,593	0.5%	Rank history: #15 in FY2022, #44 in FY2023, #16 in FY2024 and #28 in FY2025; up 14 since FY2020.
23	Metro Medical Equipment & Supply, Inc. Top agencies USAF (Department of the Air Force)	$694,461	0.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
24	Nilofer Battiwala Top agencies Army (Department of the Army) VA (Department of Veterans Affairs)	$681,555	0.5%	Rank history: #22 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
25	Werfen USA LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$680,511	0.5%	Rank history: #40 in FY2022, #40 in FY2023, #49 in FY2024 and #35 in FY2025; up 19 since FY2020.
26	Biomeme, Inc. Top agencies Army (Department of the Army)	$600,114	0.4%	Rank history: not on the FY2022–FY2025 lists; down 1 since FY2020.
27	Veterans Healthcare Supply Solutions, Inc. Top agencies VA (Department of Veterans Affairs)	$533,072	0.4%	Rank history: not on the FY2022–FY2023 lists, #91 in FY2024 and #67 in FY2025; new, not ranked in FY2020.
28	Goldbelt, Incorporated Through Goldbelt Security LLC Top agencies DTRA (Defense Threat Reduction Agency)	$498,666	0.3%	Rank history: #7 in FY2022 and not on the FY2023–FY2025 lists; up 5 since FY2020.
29	Global Life Sciences Solutions USA LLC Top agencies HHS (Department of Health and Human Services)	$460,359	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
30	Vela Diagnostics USA Inc. Top agencies VA (Department of Veterans Affairs)	$445,496	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
31	Adirondack Electronics Inc. Top agencies Navy (Department of the Navy)	$422,241	0.3%	Rank history: #39 in FY2022, #98 in FY2023, not on the FY2024 list and #25 in FY2025; up 58 since FY2020.
32	Aantilia LLC Top agencies DOI (Department of the Interior) Army (Department of the Army)	$385,795	0.3%	Rank history: not on the FY2022 list, #88 in FY2023, not on the FY2024 list and #55 in FY2025; up 38 since FY2020.
33	Bruker Scientific LLC Top agencies Navy (Department of the Navy)	$366,225	0.3%	Rank history: not on the FY2022–FY2023 lists, #28 in FY2024 and #18 in FY2025; new, not ranked in FY2020.
34	B & H International LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) NASA (National Aeronautics and Space Administration)	$336,262	0.2%	Rank history: not on the FY2022–FY2025 lists; up 51 since FY2020.
35	Federal Resources Supply Company Top agencies DOJ (Department of Justice) Army (Department of the Army) DLA (Defense Logistics Agency)	$335,070	0.2%	Rank history: #11 in FY2022, #10 in FY2023, #30 in FY2024 and #10 in FY2025; down 15 since FY2020.
36	Samyak Solutions, Inc. Top agencies USDA (Department of Agriculture) Army (Department of the Army)	$328,280	0.2%	Rank history: not on the FY2022 list, #99 in FY2023, #69 in FY2024 and #33 in FY2025; up 77 since FY2020.
37	Mesh Inc. Top agencies Navy (Department of the Navy)	$317,360	0.2%	Rank history: not on the FY2022–FY2025 lists; up 15 since FY2020.
38	Baxter International Inc. Through Baxter Healthcare Corporation Top agencies VA (Department of Veterans Affairs)	$308,862	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
39	SZY Holdings, LLC Top agencies DLA (Defense Logistics Agency)	$308,109	0.2%	Rank history: #35 in FY2022, #61 in FY2023, #53 in FY2024 and #34 in FY2025; up 15 since FY2020.
40	Ametek Inc. 3 awardees, including Mocon Inc., Spectro Analytical Instruments, Inc. and Ametek Arizona Instrument LLC Top agencies Army (Department of the Army) DLA (Defense Logistics Agency) USDA (Department of Agriculture)	$301,162	0.2%	Rank history: not on the FY2022–FY2023 lists, #73 in FY2024 and #40 in FY2025; new, not ranked in FY2020.
41	Xylem Inc. 5 awardees, including YSI Inc. Top agencies DOI (Department of the Interior)	$295,942	0.2%	Rank history: #52 in FY2022, #43 in FY2023, #47 in FY2024 and not on the FY2025 list; down 6 since FY2020.
42	Novartis AG Through Advanced Accelerator Applications USA Inc. Top agencies VA (Department of Veterans Affairs)	$292,600	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
43	Tescan USA Inc Top agencies USAF (Department of the Air Force)	$289,824	0.2%	Rank history: not on the FY2022 list, #49 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
44	Polymedco LLC 2 awardees, including Polymedco Cancer Diagnostic Products LLC Top agencies VA (Department of Veterans Affairs)	$282,803	0.2%	Rank history: #20 in FY2022, #20 in FY2023, #23 in FY2024 and #19 in FY2025; down 4 since FY2020.
45	Immucor Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$282,017	0.2%	Rank history: #70 in FY2022, #56 in FY2023, #88 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
46	D.O.O. "Medical" Export-Import Mostar Top agencies Army (Department of the Army)	$272,156	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
47	Branch Medical LLC Top agencies VA (Department of Veterans Affairs) DLA (Defense Logistics Agency)	$254,591	0.2%	Rank history: #45 in FY2022 and not on the FY2023–FY2025 lists; up 43 since FY2020.
48	Sebia, Inc. Top agencies VA (Department of Veterans Affairs)	$245,552	0.2%	Rank history: #47 in FY2022, #70 in FY2023, not on the FY2024 list and #31 in FY2025; up 1 since FY2020.
49	University of Utah Through Arup Laboratories Inc. Top agencies VA (Department of Veterans Affairs)	$239,855	0.2%	Rank history: #91 in FY2022 and not on the FY2023–FY2025 lists; up 7 since FY2020.
50	Rees Scientific Corporation Top agencies Army (Department of the Army) DHA (Defense Health Agency)	$218,333	0.2%	Rank history: not on the FY2022 list, #65 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
51	Stripes Global, Inc. Top agencies VA (Department of Veterans Affairs)	$207,486	0.1%	Rank history: #66 in FY2022, #74 in FY2023 and not on the FY2024–FY2025 lists; up 80 since FY2020.
52	Shimadzu Corporation 2 awardees, including Shimadzu Scientific Instruments, Inc. and Shimadzu Science Corporation Top agencies Navy (Department of the Navy) USDA (Department of Agriculture) DHS (Department of Homeland Security)	$203,325	0.1%	Rank history: #31 in FY2022 and not on the FY2023–FY2025 lists; up 25 since FY2020.
53	Treadwell Corporation (Delaware) Top agencies Navy (Department of the Navy)	$194,680	0.1%	Rank history: not on the FY2022 list, #58 in FY2023, #38 in FY2024 and #63 in FY2025; up 122 since FY2020.
54	Aerico Industries Inc. Top agencies Army (Department of the Army)	$192,575	0.1%	Rank history: not on the FY2022 list, #69 in FY2023 and not on the FY2024–FY2025 lists; up 27 since FY2020.
55	Esco Technologies Inc. Through Doble Engineering Company Top agencies DOI (Department of the Interior)	$187,625	0.1%	Rank history: #14 in FY2022, #19 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
56	Expotech U.s.a., Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$185,899	0.1%	Rank history: #50 in FY2022, #46 in FY2023, not on the FY2024 list and #62 in FY2025; up 3 since FY2020.
57	Idexx Laboratories Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$174,434	0.1%	Rank history: not on the FY2022–FY2025 lists; up 41 since FY2020.
58	Weibel Equipment, Inc. Top agencies Navy (Department of the Navy)	$170,000	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
59	Sequoia Scientific, Inc. Top agencies DOI (Department of the Interior)	$162,281	0.1%	Rank history: not on the FY2022 list, #81 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
60	Midland Scientific Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$161,266	0.1%	Rank history: not on the FY2022–FY2025 lists; up 36 since FY2020.
61	Campbell Scientific Inc. Top agencies DOI (Department of the Interior) USDA (Department of Agriculture) Navy (Department of the Navy)	$157,815	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
62	Oxford Instruments PLC Through Oxford Instruments America, Inc. Top agencies Army (Department of the Army)	$156,400	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
63	Lockheed Martin Corporation Top agencies Navy (Department of the Navy)	$155,975	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
64	Mettler-Toledo International Inc. Through Mettler-Toledo LLC Top agencies Treasury (Department of the Treasury) DHS (Department of Homeland Security)	$153,622	0.1%	Rank history: #55 in FY2022, #54 in FY2023 and not on the FY2024–FY2025 lists; down 27 since FY2020.
65	Oritain USA Inc. Top agencies DHS (Department of Homeland Security)	$150,000	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
66	Santner Privatstiftung Through Anton Paar Usa, Inc. Top agencies NASA (National Aeronautics and Space Administration) USDA (Department of Agriculture) Navy (Department of the Navy)	$145,792	0.1%	Rank history: #29 in FY2022, #59 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
67	Laurus Systems Inc. Top agencies HHS (Department of Health and Human Services)	$144,765	0.1%	Rank history: not on the FY2022–FY2024 lists and #92 in FY2025; up 77 since FY2020.
68	Nasco Aerospace and Electronics LLC Top agencies Navy (Department of the Navy)	$141,811	0.1%	Rank history: not on the FY2022 list, #92 in FY2023 and not on the FY2024–FY2025 lists; up 93 since FY2020.
69	Dilo Company, Inc. Top agencies DOI (Department of the Interior) DOE (Department of Energy)	$141,511	0.1%	Rank history: #34 in FY2022 and not on the FY2023–FY2025 lists; up 18 since FY2020.
70	Paladin Defense Services LLC Top agencies Army (Department of the Army)	$139,583	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
71	IPG Photonics Corporation Top agencies Navy (Department of the Navy)	$139,160	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
72	Gasmet Technologies OY Through Gasmet Technologies Inc. Top agencies VA (Department of Veterans Affairs) USDA (Department of Agriculture)	$130,380	0.1%	Rank history: #77 in FY2022 and not on the FY2023–FY2025 lists; up 16 since FY2020.
73	Neptech, Inc. Top agencies Army (Department of the Army)	$129,234	0.1%	Rank history: not on the FY2022–FY2025 lists; down 11 since FY2020.
74	D-2 Incorporated Top agencies DLA (Defense Logistics Agency)	$125,019	0.1%	Rank history: not on the FY2022–FY2024 lists and #1 in FY2025; up 184 since FY2020.
75	Triple Canopy Inc. Through Academi Training Center LLC Top agencies Army (Department of the Army)	$124,559	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
76	Safetyspect Inc. Top agencies USDA (Department of Agriculture)	$124,500	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
77	All Safe Industries, Inc. Top agencies DHS (Department of Homeland Security)	$123,820	0.1%	Rank history: not on the FY2022–FY2025 lists; up 18 since FY2020.
78	Siemens Healthcare Diagnostics Inc. Top agencies VA (Department of Veterans Affairs)	$121,080	0.1%	Rank history: not on the FY2022–FY2025 lists; down 64 since FY2020.
79	C W Lawley, Incorporated Top agencies Navy (Department of the Navy)	$112,057	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
80	Accelerate Diagnostics, Inc. Top agencies VA (Department of Veterans Affairs)	$110,100	0.1%	Rank history: not on the FY2022–FY2025 lists; up 22 since FY2020.
81	R & D Enterprises, Inc. Top agencies Army (Department of the Army)	$106,626	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
82	Gulf Corporation for Technology W.l.l Top agencies Navy (Department of the Navy)	$102,400	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
83	Li-Cor, Inc. Top agencies USDA (Department of Agriculture)	$100,760	0.1%	Rank history: not on the FY2022 list, #47 in FY2023, #83 in FY2024 and #70 in FY2025; up 101 since FY2020.
84	Lovelace Respiratory 2 awardees, including Lovelace Biomedical Research Institute Top agencies USAF (Department of the Air Force)	$100,000	0.1%	Rank history: not on the FY2022–FY2025 lists; down 11 since FY2020.
85	The Janz Corp Top agencies VA (Department of Veterans Affairs)	$99,494	0.1%	Rank history: not on the FY2022–FY2023 lists, #96 in FY2024 and not on the FY2025 list; up 41 since FY2020.
86	Gerin Corp Inc. Top agencies DLA (Defense Logistics Agency)	$99,164	0.1%	Rank history: not on the FY2022 list, #77 in FY2023, not on the FY2024 list and #74 in FY2025; up 43 since FY2020.
87	Hologic, Inc. Top agencies VA (Department of Veterans Affairs)	$95,400	0.1%	Rank history: #41 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
88	Nikkiso America Inc. Through Microtrac, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$94,700	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
89	Chemdaq, Inc. Top agencies VA (Department of Veterans Affairs)	$94,591	0.1%	Rank history: #84 in FY2022, not on the FY2023–FY2024 lists and #86 in FY2025; up 41 since FY2020.
90	Pacific Star Corporation Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) EPA (Environmental Protection Agency)	$94,163	0.1%	Rank history: #53 in FY2022 and not on the FY2023–FY2025 lists; up 26 since FY2020.
91	Foster & Freeman USA Inc. Top agencies DHS (Department of Homeland Security)	$93,742	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
92	Tryco Incorporated Top agencies DHA (Defense Health Agency)	$89,632	0.1%	Rank history: #89 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
93	Marine Electric Systems Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$86,963	0.1%	Rank history: #68 in FY2022, #52 in FY2023 and not on the FY2024–FY2025 lists; down 28 since FY2020.
94	Dsplogic Inc. Top agencies Navy (Department of the Navy)	$86,499	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
95	Roper Technologies, Inc. Through Precision Analyzer Company L.P. Top agencies USAF (Department of the Air Force) EPA (Environmental Protection Agency)	$85,323	0.1%	Rank history: not on the FY2022 list, #62 in FY2023 and not on the FY2024–FY2025 lists; up 145 since FY2020.
96	PP Systems International, LLC Top agencies USDA (Department of Agriculture)	$84,665	0.1%	Rank history: #94 in FY2022 and not on the FY2023–FY2025 lists; down 24 since FY2020.
97	A2A Integrated Logistics Inc. Top agencies VA (Department of Veterans Affairs)	$84,558	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
98	Distribution Specialists Inc. Top agencies DLA (Defense Logistics Agency)	$84,535	0.1%	Rank history: not on the FY2022–FY2025 lists; up 172 since FY2020.
99	GEO Scientific Ltd Top agencies DOI (Department of the Interior)	$84,375	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
100	Stift Chalmers Tekniska Hogskola Through Chalmers Tekniska Hogskola Aktiebolag Top agencies DOI (Department of the Interior)	$84,000	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.

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100 of 283 contractors listed here. See the rest on GovTribe.

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 $144 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 2021 ran Oct 1, 2020 – Sep 30, 2021. 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 FY2020. "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 FY2020 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.

Quick answers

Who were the top 10 PSC 6630 contractors in FY2021?

1. Danaher Corporation ($21.7M), 2. Abbott Laboratories ($20.1M), 3. Siemens Aktiengesellschaft ($14.5M), 4. Roche Holding AG ($13.6M), 5. Thermo Electron Corporation ($4.02M), 6. Johnson & Johnson ($2.83M), 7. Grifols Diagnostic Solutions Inc. ($2.49M), 8. Agilent Technologies, Inc. ($2.1M), 9. Stago International ($2.08M), 10. Compagnie Merieux Alliance ($1.88M).

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