Operating signal within 12 months from two or more independent sources.
What they make
Other Measuring and Controlling Device Manufacturing334519Assay Technology manufactures and analyzes personal monitoring badges for measuring chemical exposure in workers' breathing zones, along with air samplers and related sampling equipment including tubes, cassettes, wipes, and pumps. The company provides laboratory analysis services for air samples and specializes in chemical challenge testing of respirator cartridges and filters using an atmosphere generator instrument called the HCS-501. The company serves industrial hygiene laboratories and occupational health monitoring.
SUMMARIZED FROM THE COMPANY’S OWN WEBSITE
Where it is
Other plants nearby
| Facility | City | Industry | Status | Distance |
|---|---|---|---|---|
| Exacta Tech INC | Livermore | Analytical Laboratory Instrument Manufacturing 334516 | UNVERIFIED | 0.3 KM |
| Curtis Pmc | Livermore | Totalizing Fluid Meter and Counting Device Manufacturing 334514 | UNVERIFIED | 0.6 KM |
| Altamont Manufacturing, INC. | Livermore | Fabricated Structural Metal Manufacturing 332312 | ACTIVE | 0.5 KM |
| Rh Usa, INC | Livermore | Electromedical and Electrotherapeutic Apparatus Manufacturing 334510 | UNVERIFIED | 1.2 KM |
| Rh USA INC | Livermore | Electromedical and Electrotherapeutic Apparatus Manufacturing 334510 | ACTIVE | 1.9 KM |
Also at this address
No other federal record shares this street address.
WHERE THIS RECORD COMES FROM — 3 FEDERAL SOURCES, 8 FIELDS
Every fact on this page traces to a public federal filing. The table below names which register holds this facility, whether that register proves the plant operates or only that it exists, and when each of them last saw it.
EPA cross-references this facility in CA-ENVIROVIEW, RCRAINFO · EPA site type STATIONARY.
| Source | Evidence | First seen | Last seen |
|---|---|---|---|
| COMPANY SITE | OPERATING | JUL 2026 | AUG 2026 |
| SAM GOV | OPERATING | NOV 2025 | NOV 2025 |
| EPA FRS | EXISTENCE | OCT 2015 | OCT 2015 |
FIELD BY FIELD — WHICH SOURCE SUPPLIED WHAT
| FIELD | SOURCE | SIGNAL |
|---|---|---|
| ADDRESS LINE1 | EPA FRS | JUL 2026 |
| ADDRESS LINE1 | SAM GOV | NOV 2025 |
| CAGE CODE | SAM GOV | NOV 2025 |
| CITY | EPA FRS | JUL 2026 |
| CITY | SAM GOV | NOV 2025 |
| GEOM | CENSUS GEOCODER | JUL 2026 |
| GEOM | EPA FRS | JUL 2026 |
| NAME | EPA FRS | JUL 2026 |
| NAME | SAM GOV | NOV 2025 |
| REGISTRATION EXPIRATION | SAM GOV | NOV 2025 |
| STATE | EPA FRS | JUL 2026 |
| STATE | SAM GOV | NOV 2025 |
| WEBSITE | SAM GOV | NOV 2025 |
Status is computed from independent sources; nothing here is self-reported unless marked Claimed.


