Top 100 Contractors in PSC 6630: Chemical Analysis Instruments, FY2023

Name: Top 100 Contractors in PSC 6630: Chemical Analysis Instruments, FY2023
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2022 – Sep 30, 2023 Code page on GovTribe

The top 10 won 63% of FY2023 PSC 6630 contract dollars

Contract obligations: $170,295,596 Net of deobligations, by contracts coded PSC 6630
Contractors: 271 Parent companies with an obligation
Largest contractor: Danaher Corporation $30.8 million, 16.2% 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 11 awardees, including Beckman Coulter, Inc., AB Sciex LLC and Cepheid Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$30,807,743	16.2%	Rank history: #1 in FY2021, #3 in FY2022, #2 in FY2024 and #13 in FY2025; up 2 since FY2022.
2	Abbott Laboratories 3 awardees, including Abbott Molecular Inc. Top agencies VA (Department of Veterans Affairs) USAF (Department of the Air Force) DOJ (Department of Justice)	$23,217,195	12.2%	Rank history: #2 in FY2021, #2 in FY2022, #1 in FY2024 and #3 in FY2025; unchanged since FY2022.
3	Siemens Aktiengesellschaft Through Siemens Healthcare Diagnostics Inc. Top agencies VA (Department of Veterans Affairs) Navy (Department of the Navy) USAF (Department of the Air Force)	$19,094,817	10.0%	Rank history: #3 in FY2021, #4 in FY2022, #10 in FY2024 and not on the FY2025 list; up 1 since FY2022.
4	Chemring Group PLC Through Chemring Sensors and Electronic Systems, Inc. Top agencies Army (Department of the Army)	$15,733,690	8.3%	Rank history: not on the FY2021 list, #1 in FY2022 and not on the FY2024–FY2025 lists; down 3 since FY2022.
5	Roche Holding AG Through Roche Diagnostics Corporation Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$13,342,481	7.0%	Rank history: #4 in FY2021, #5 in FY2022, #6 in FY2024 and not on the FY2025 list; unchanged since FY2022.
6	Thermo Electron Corporation 8 awardees, including Thermo Electron North America LLC, Fisher Scientific Company L.L.C. and Thermo Orion Inc. Top agencies DIA (Defense Intelligence Agency) Navy (Department of the Navy) DOJ (Department of Justice)	$4,108,132	2.2%	Rank history: #5 in FY2021, #6 in FY2022 and not on the FY2024–FY2025 lists; unchanged since FY2022.
7	RTX Corporation 2 awardees, including Hamilton Sundstrand Corporation Top agencies Navy (Department of the Navy)	$3,901,717	2.0%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
8	Johnson & Johnson Through Ortho-Clinical Diagnostics, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) USAF (Department of the Air Force)	$3,786,341	2.0%	Rank history: #6 in FY2021, #12 in FY2022, #21 in FY2024 and not on the FY2025 list; up 4 since FY2022.
9	Government Scientific Source Inc. Top agencies Army (Department of the Army) VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$3,187,092	1.7%	Rank history: #13 in FY2021, #17 in FY2022, #11 in FY2024 and #7 in FY2025; up 8 since FY2022.
10	Federal Resources Supply Company Top agencies DOJ (Department of Justice) DIA (Defense Intelligence Agency) Navy (Department of the Navy)	$2,790,120	1.5%	Rank history: #35 in FY2021, #11 in FY2022, #30 in FY2024 and #10 in FY2025; up 1 since FY2022.
11	Compass Instruments Inc. Top agencies Army (Department of the Army)	$2,275,757	1.2%	Rank history: not on the FY2021 list, #8 in FY2022, #15 in FY2024 and not on the FY2025 list; down 3 since FY2022.
12	Chemspeed Technologies Inc. Top agencies HHS (Department of Health and Human Services)	$1,918,683	1.0%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
13	Semtech Solutions, Inc. Top agencies Navy (Department of the Navy)	$1,915,000	1.0%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
14	Sysmex Corporation Through Sysmex America, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) USAF (Department of the Air Force)	$1,797,859	0.9%	Rank history: #14 in FY2021, #18 in FY2022, #50 in FY2024 and not on the FY2025 list; up 4 since FY2022.
15	Jeol Ltd. Through Jeol Usa, Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) Army (Department of the Army)	$1,633,950	0.9%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
16	Ulvac Inc. Through Physical Electronics Usa, Inc. Top agencies Army (Department of the Army)	$1,500,000	0.8%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
17	Golden Max LLC Top agencies DHA (Defense Health Agency)	$1,487,400	0.8%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
18	Agilent Technologies, Inc. 6 awardees, including Agilent Technologies Deutschland GMBH Top agencies Army (Department of the Army) EPA (Environmental Protection Agency) HHS (Department of Health and Human Services)	$1,483,452	0.8%	Rank history: #8 in FY2021, #10 in FY2022 and not on the FY2024–FY2025 lists; down 8 since FY2022.
19	Esco Technologies Inc. Through Doble Engineering Company Top agencies DOI (Department of the Interior)	$1,395,824	0.7%	Rank history: #55 in FY2021, #14 in FY2022 and not on the FY2024–FY2025 lists; down 5 since FY2022.
20	Polymedco LLC 2 awardees, including Polymedco Cancer Diagnostic Products LLC Top agencies VA (Department of Veterans Affairs)	$1,236,445	0.6%	Rank history: #44 in FY2021, #20 in FY2022, #23 in FY2024 and #19 in FY2025; unchanged since FY2022.
21	Stago International Through Diagnostica Stago Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$1,131,328	0.6%	Rank history: #9 in FY2021, #16 in FY2022, #25 in FY2024 and not on the FY2025 list; down 5 since FY2022.
22	Theodor Wille Intertrade GMBH Through Atlantic Diving Supply, Inc. Top agencies Army (Department of the Army)	$1,112,605	0.6%	Rank history: not on the FY2021 list, #78 in FY2022 and not on the FY2024–FY2025 lists; up 56 since FY2022.
23	Grifols SA Through Gen-Probe Incorporated Top agencies VA (Department of Veterans Affairs)	$1,000,722	0.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
24	Tosoh Corporation Through Tosoh Bioscience, Inc. Top agencies VA (Department of Veterans Affairs)	$949,621	0.5%	Rank history: #12 in FY2021, #24 in FY2022, #32 in FY2024 and not on the FY2025 list; unchanged since FY2022.
25	Rigaku Americas Holding Inc Top agencies Navy (Department of the Navy) EPA (Environmental Protection Agency)	$912,010	0.5%	Rank history: not on the FY2021 list, #36 in FY2022, #34 in FY2024 and not on the FY2025 list; up 11 since FY2022.
26	Becton, Dickinson and Co 3 awardees Top agencies HHS (Department of Health and Human Services) DHA (Defense Health Agency) USAF (Department of the Air Force)	$905,530	0.5%	Rank history: #15 in FY2021, #28 in FY2022, #56 in FY2024 and not on the FY2025 list; up 2 since FY2022.
27	Rohde & Schwarz GMBH & Co. KG Through Rohde & Schwarz Usa, Inc. Top agencies Navy (Department of the Navy)	$876,174	0.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
28	Laboratory Corporation of America 2 awardees Top agencies VA (Department of Veterans Affairs)	$859,005	0.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 176 since FY2022.
29	Cepheid Top agencies VA (Department of Veterans Affairs)	$823,244	0.4%	Rank history: not on the FY2021 list, #30 in FY2022 and not on the FY2024–FY2025 lists; up 1 since FY2022.
30	Bruker Corporation 4 awardees, including Bruker Biospin Corp, Bruker Detection Corp and Bruker Scientific LLC Top agencies HHS (Department of Health and Human Services) DLA (Defense Logistics Agency) DOJ (Department of Justice)	$806,965	0.4%	Rank history: #16 in FY2021, not on the FY2022 list, #28 in FY2024 and #18 in FY2025; up 73 since FY2022.
31	Horiba Ltd. Through Horiba Instruments Incorporated Top agencies Army (Department of the Army)	$768,616	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 159 since FY2022.
32	Technical Communities Inc 2 awardees Top agencies USAF (Department of the Air Force) USDA (Department of Agriculture) Army (Department of the Army)	$761,398	0.4%	Rank history: not on the FY2021 list, #82 in FY2022, #42 in FY2024 and #52 in FY2025; up 50 since FY2022.
33	Telectro-Mek Inc. Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$692,016	0.4%	Rank history: #17 in FY2021, #19 in FY2022, #31 in FY2024 and #12 in FY2025; down 14 since FY2022.
34	Waters Corporation 3 awardees, including Waters Technologies Corporation and Ta Instruments - Waters L.L.C. Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs) Navy (Department of the Navy)	$667,275	0.4%	Rank history: not on the FY2021 list, #25 in FY2022, #19 in FY2024 and not on the FY2025 list; down 9 since FY2022.
35	Kilgore Flares Company LLC Through Chemring Sensors and Electronic Systems, Inc. Top agencies Army (Department of the Army)	$637,764	0.3%	Rank history: not on the FY2021–FY2022 lists, #3 in FY2024 and #5 in FY2025; new.
36	Western States Sales, Inc. Top agencies GSA (General Services Administration)	$629,358	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
37	Luminex Corp Through Diasorin Inc. Top agencies VA (Department of Veterans Affairs)	$609,102	0.3%	Rank history: not on the FY2021–FY2022 lists, #39 in FY2024 and not on the FY2025 list; new.
38	Leco Corp Top agencies Navy (Department of the Navy)	$586,132	0.3%	Rank history: not on the FY2021 list, #67 in FY2022, not on the FY2024 list and #26 in FY2025; up 29 since FY2022.
39	Shimadzu Corporation Through Shimadzu Scientific Instruments, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) VA (Department of Veterans Affairs)	$579,817	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
40	Werfen USA LLC 2 awardees Top agencies VA (Department of Veterans Affairs)	$552,100	0.3%	Rank history: #25 in FY2021, #40 in FY2022, #49 in FY2024 and #35 in FY2025; unchanged since FY2022.
41	Nanoscience Instruments Inc. Top agencies DIA (Defense Intelligence Agency)	$499,640	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
42	Compagnie Merieux Alliance 2 awardees, including Biomerieux Inc. Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force)	$470,627	0.2%	Rank history: #10 in FY2021, #9 in FY2022, #17 in FY2024 and not on the FY2025 list; down 33 since FY2022.
43	Xylem Inc. Through YSI Inc. Top agencies DOI (Department of the Interior) EPA (Environmental Protection Agency) DHA (Defense Health Agency)	$469,643	0.2%	Rank history: #41 in FY2021, #52 in FY2022, #47 in FY2024 and not on the FY2025 list; up 9 since FY2022.
44	Franklin Young International, Incorporated Top agencies USAF (Department of the Air Force) VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$451,351	0.2%	Rank history: #22 in FY2021, #15 in FY2022, #16 in FY2024 and #28 in FY2025; down 29 since FY2022.
45	Texas Research International Inc. Through Tri Airtesting Inc. Top agencies Navy (Department of the Navy)	$448,986	0.2%	Rank history: not on the FY2021 list, #51 in FY2022, #54 in FY2024 and not on the FY2025 list; up 6 since FY2022.
46	Expotech U.s.a., Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$447,303	0.2%	Rank history: #56 in FY2021, #50 in FY2022, not on the FY2024 list and #62 in FY2025; up 4 since FY2022.
47	Li-Cor, Inc. Top agencies Commerce (Department of Commerce) USDA (Department of Agriculture) DOI (Department of the Interior)	$418,010	0.2%	Rank history: #83 in FY2021, not on the FY2022 list, #83 in FY2024 and #70 in FY2025; returned.
48	Colonial Scientific, Inc. Top agencies DHS (Department of Homeland Security)	$408,825	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 120 since FY2022.
49	Tescan USA Inc Top agencies National Gallery of Art	$375,609	0.2%	Rank history: #43 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
50	OHD LLLP Through Markes International, Inc. Top agencies EPA (Environmental Protection Agency)	$372,853	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
51	DC Scientific, Inc. Top agencies Army (Department of the Army)	$348,512	0.2%	Rank history: not on the FY2021–FY2022 lists, #51 in FY2024 and #41 in FY2025; new.
52	Marine Electric Systems Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$345,334	0.2%	Rank history: #93 in FY2021, #68 in FY2022 and not on the FY2024–FY2025 lists; up 16 since FY2022.
53	The Churchill Companies 2 awardees, including TSI Incorporated and Tekran Instruments Corporation Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy) EPA (Environmental Protection Agency)	$319,789	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 71 since FY2022.
54	Mettler-Toledo International Inc. 2 awardees, including Mettler-Toledo Autochem, Inc. Top agencies DOJ (Department of Justice)	$311,288	0.2%	Rank history: #64 in FY2021, #55 in FY2022 and not on the FY2024–FY2025 lists; up 1 since FY2022.
55	PPD Development LP 2 awardees, including Thermo Scientific Portable Analytical Instruments Inc. and Fisher Scientific Company L.L.C. Top agencies EPA (Environmental Protection Agency) DOJ (Department of Justice) DHS (Department of Homeland Security)	$292,036	0.2%	Rank history: not on the FY2021–FY2022 lists, #18 in FY2024 and #15 in FY2025; new.
56	Immucor Inc. Top agencies VA (Department of Veterans Affairs)	$290,739	0.2%	Rank history: #45 in FY2021, #70 in FY2022, #88 in FY2024 and not on the FY2025 list; up 14 since FY2022.
57	General Electric Company Through GE Grid Solutions LLC Top agencies Army (Department of the Army)	$288,189	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
58	Treadwell Corporation (Delaware) Top agencies Navy (Department of the Navy)	$275,380	0.1%	Rank history: #53 in FY2021, not on the FY2022 list, #38 in FY2024 and #63 in FY2025; up 114 since FY2022.
59	Santner Privatstiftung Through Anton Paar Usa, Inc. Top agencies Army (Department of the Army)	$275,025	0.1%	Rank history: #66 in FY2021, #29 in FY2022 and not on the FY2024–FY2025 lists; down 30 since FY2022.
60	Ixrf Inc. Top agencies USAF (Department of the Air Force)	$274,982	0.1%	Rank history: not on the FY2021–FY2022 lists, #45 in FY2024 and not on the FY2025 list; new.
61	SZY Holdings, LLC Top agencies DLA (Defense Logistics Agency)	$260,921	0.1%	Rank history: #39 in FY2021, #35 in FY2022, #53 in FY2024 and #34 in FY2025; down 26 since FY2022.
62	Roper Technologies, Inc. Through Precision Analyzer Company L.P. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$251,521	0.1%	Rank history: #95 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 50 since FY2022.
63	Ohio Lumex Co., Inc. Top agencies EPA (Environmental Protection Agency) HHS (Department of Health and Human Services)	$249,270	0.1%	Rank history: not on the FY2021 list, #93 in FY2022, not on the FY2024 list and #96 in FY2025; up 30 since FY2022.
64	AGI North America Inc. Top agencies Army (Department of the Army)	$243,967	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
65	Rees Scientific Corporation Top agencies Navy (Department of the Navy)	$226,352	0.1%	Rank history: #50 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
66	Feole Technologies Inc. Top agencies Navy (Department of the Navy)	$221,745	0.1%	Rank history: not on the FY2021–FY2022 lists, #82 in FY2024 and not on the FY2025 list; new.
67	MJL Enterprises LLC Top agencies Army (Department of the Army)	$221,246	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
68	Mountain Horse LLC Top agencies Army (Department of the Army) DFAS (Defense Finance and Accounting Service)	$202,505	0.1%	Rank history: not on the FY2021–FY2022 lists, #29 in FY2024 and #11 in FY2025; new.
69	Aerico Industries Inc. Top agencies Army (Department of the Army)	$189,974	0.1%	Rank history: #54 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 56 since FY2022.
70	Sebia, Inc. Top agencies VA (Department of Veterans Affairs)	$187,848	0.1%	Rank history: #48 in FY2021, #47 in FY2022, not on the FY2024 list and #31 in FY2025; down 23 since FY2022.
71	Quaesta Instruments, LLC Top agencies DOI (Department of the Interior)	$182,000	0.1%	Rank history: not on the FY2021 list, #37 in FY2022 and not on the FY2024–FY2025 lists; down 34 since FY2022.
72	5D Investment OY Through Gasmet Technologies Inc. Top agencies USAF (Department of the Air Force) USUHS (DOD Uniformed Services University of the Health Sciences)	$173,890	0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #58 in FY2025; new.
73	Eastern Research Group Inc. Top agencies HHS (Department of Health and Human Services)	$169,398	0.1%	Rank history: not on the FY2021 list, #44 in FY2022 and not on the FY2024–FY2025 lists; down 29 since FY2022.
74	Stripes Global, Inc. Top agencies VA (Department of Veterans Affairs)	$162,101	0.1%	Rank history: #51 in FY2021, #66 in FY2022 and not on the FY2024–FY2025 lists; down 8 since FY2022.
75	3T Business Group LLC Top agencies USUHS (DOD Uniformed Services University of the Health Sciences)	$160,758	0.1%	Rank history: not on the FY2021 list, #87 in FY2022 and not on the FY2024–FY2025 lists; up 12 since FY2022.
76	Perkinelmer Inc. Through Revvity Health Sciences, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$159,747	0.1%	Rank history: not on the FY2021 list, #80 in FY2022 and not on the FY2024–FY2025 lists; up 4 since FY2022.
77	Gerin Corp Inc. Top agencies DLA (Defense Logistics Agency)	$153,574	0.1%	Rank history: #86 in FY2021, not on the FY2022 list, not on the FY2024 list and #74 in FY2025; up 28 since FY2022.
78	Midland Scientific Inc. Top agencies DLA (Defense Logistics Agency)	$152,936	0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #65 in FY2025; new.
79	Analox Sensor Technology Limited Top agencies Navy (Department of the Navy)	$149,184	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
80	Detectachem Inc. Top agencies USAF (Department of the Air Force)	$143,686	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
81	Sequoia Scientific, Inc. Top agencies DOI (Department of the Interior)	$138,015	0.1%	Rank history: #59 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
82	BIO - RAD Laboratories Gesellschaft MIT Beschraenkter Haftung 2 awardees, including Bio-Rad Laboratories, Inc. Top agencies USDA (Department of Agriculture) VA (Department of Veterans Affairs)	$131,273	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 80 since FY2022.
83	Nexair LLC Top agencies Army (Department of the Army)	$130,000	0.1%	Rank history: not on the FY2021–FY2022 lists, #57 in FY2024 and not on the FY2025 list; new.
84	Habco Industries LLC Top agencies DLA (Defense Logistics Agency)	$129,575	0.1%	Rank history: not on the FY2021 list, #60 in FY2022 and not on the FY2024–FY2025 lists; down 24 since FY2022.
85	Diasorin Molecular, LLC Top agencies VA (Department of Veterans Affairs)	$129,000	0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #82 in FY2025; new.
86	Biofire Defense LLC 2 awardees, including Biomerieux Deutschland GMBH Top agencies Army (Department of the Army) DTRA (Defense Threat Reduction Agency) GSA (General Services Administration)	$128,333	0.1%	Rank history: not on the FY2021 list, #90 in FY2022, #97 in FY2024 and not on the FY2025 list; up 4 since FY2022.
87	Pendar Technologies LLC Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force)	$126,398	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
88	Aantilia LLC Top agencies VA (Department of Veterans Affairs) DOI (Department of the Interior)	$123,917	0.1%	Rank history: #32 in FY2021, not on the FY2022 list, not on the FY2024 list and #55 in FY2025; returned.
89	Magritek Inc. Top agencies DHS (Department of Homeland Security)	$123,100	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
90	RUF US Inc. Top agencies Navy (Department of the Navy)	$117,560	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
91	Elemental Scientific, Inc. Top agencies HHS (Department of Health and Human Services)	$117,080	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
92	Nasco Aerospace and Electronics LLC Top agencies Navy (Department of the Navy)	$113,103	0.1%	Rank history: #68 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
93	Dust Quant LLC Top agencies Army (Department of the Army)	$110,850	0.1%	Rank history: not on the FY2021 list, #81 in FY2022 and not on the FY2024–FY2025 lists; down 12 since FY2022.
94	Noble Supply & Logistics LLC Top agencies EPA (Environmental Protection Agency)	$108,880	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
95	Steris Corporation Top agencies USDA (Department of Agriculture)	$107,586	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 127 since FY2022.
96	Entech Instruments, Inc. Top agencies EPA (Environmental Protection Agency)	$105,626	0.1%	Rank history: not on the FY2021 list, #85 in FY2022, not on the FY2024 list and #47 in FY2025; down 11 since FY2022.
97	Gastops Ltd. Top agencies Navy (Department of the Navy)	$104,094	0.1%	Rank history: not on the FY2021 list, #49 in FY2022 and not on the FY2024–FY2025 lists; down 48 since FY2022.
98	Adirondack Electronics Inc. Top agencies Navy (Department of the Navy)	$102,419	0.1%	Rank history: #31 in FY2021, #39 in FY2022, not on the FY2024 list and #25 in FY2025; down 59 since FY2022.
99	Samyak Solutions, Inc. Top agencies HHS (Department of Health and Human Services) Navy (Department of the Navy)	$100,829	0.1%	Rank history: #36 in FY2021, not on the FY2022 list, #69 in FY2024 and #33 in FY2025; up 41 since FY2022.
100	Vcloud GOV Inc. Top agencies HHS (Department of Health and Human Services)	$98,920	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.

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100 of 271 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 $190 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 2023 ran Oct 1, 2022 – Sep 30, 2023. 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 FY2022. "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 FY2022 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 FY2023?

1. Danaher Corporation ($30.8M), 2. Abbott Laboratories ($23.2M), 3. Siemens Aktiengesellschaft ($19.1M), 4. Chemring Group PLC ($15.7M), 5. Roche Holding AG ($13.3M), 6. Thermo Electron Corporation ($4.11M), 7. RTX Corporation ($3.9M), 8. Johnson & Johnson ($3.79M), 9. Government Scientific Source Inc. ($3.19M), 10. Federal Resources Supply Company ($2.79M).

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