Class Biologically Clean LTD

810 Stewart St, Madison, WI 53713

ACTIVELAST SEEN IN FEDERAL DATA OCT 2026 · 3 SOURCES

Operating signal within 12 months from two or more independent sources.

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Homepage of Class Biologically Clean LTD

Their homepage, crawled JUL 2026

What they make

All Other Miscellaneous Manufacturing339999

flexible film
semi-rigid isolators
cleanrooms
animal research
rodents
bio/pharmaceutical production
compounding
milling
weighing
aseptic testing

NAMED ON THE COMPANY’S OWN WEBSITE, READ JUL 29, 2026

Products

Sold by CLASS BIOLOGICALLY CLEAN LTD · 1

Laboratory Equipment And Supplies

Recorded against the company rather than this address. Federal award and drug records name the company, not the plant, so we cannot say which of its sites makes these.

Where these came from

1 from usaspending_psc · Federal registry

Supplied under federal award HHSN263201700397A (2017-08-14), PSC . An award shows what the government bought from this company; it does not establish which of its sites made it.

Where it is

43.03006, -89.39488 · CENSUS TIGER

COUNTY

Dane County

METRO AREA

Madison, WI

ON GOOGLE MAPS

Open this address

STREET VIEW

Open street-level view — JUN 2025

Other plants nearby

Facility	City	Industry	Status	Distance
Dapper Cadaver LLC	Madison	All Other Rubber Product Manufacturing 326299	LIKELY ACTIVE	0.4 KM
Saris Equipment LLC	Fitchburg	Other Motor Vehicle Parts Manufacturing 336390	ACTIVE	6.2 KM
Valiant, INC.	Madison	Doll, Toy, and Game Manufacturing 339930	UNVERIFIED	9.5 KM
The Game Crafter, LLC	Madison	Doll, Toy, and Game Manufacturing 339930	ACTIVE	7.9 KM
Flownamics Analytical Instruments INC	Madison	All Other Miscellaneous Electrical Equipment and Component Manufacturing 335999	ACTIVE	8.7 KM

Every listed plant in Dane County

Also at this address

No other federal record shares this street address.

Where this record comes from

3 sources hold this plant, and 10 fields on this page come from them. Each line is one agency’s own record of it: the identifier it is filed under, whether that record shows the plant operating or only that it exists, and when the register first and last saw it there.

The company’s own websiteOPERATING
first seen JUL 2026 · last seen OCT 2026
SAM.gov entity registrationOPERATING
Record FLZ3MM3ENP44 · first seen JUN 2026 · last seen JUN 2026
SBA Paycheck Protection Program loan recordsEXISTENCE
Record WI|madison|810 stewart st · first seen JAN 2021 · last seen JAN 2021

IN DANE COUNTY17 other plants share this one’s industry (Other Miscellaneous Manufacturing, NAICS 3399); 9 of them have a size band on record.

What each source says

Every field below, as each source filed it. The value this page shows is marked; where the sources disagree, the field says so. Status is computed from independent sources; nothing here is self-reported unless marked Claimed.

Name: SAM.gov: CLASS BIOLOGICALLY CLEAN LTD · JUN 2026
Street address: SAM.gov: 810 STEWART ST · JUN 2026
City: SAM.gov: MADISON · JUN 2026
State: SAM.gov: WI · JUN 2026
Coordinates: Census geocoder: 43.030064782887,-89.394879386395 · JUL 2026
Employees (band): SBA PPP: 1-19 · JAN 2021
Website: SAM.gov: http://www.cbclean.com · JUN 2026
CAGE code: SAM.gov: 4JRB3 · JUN 2026
PPP loan: SBA PPP: PPP loan x2, approved 2021-01-28, 15 jobs reported · JAN 2021
SAM registration expires: SAM.gov: 2027-06-05 · JUN 2026

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