Toluidine Blue
8 US facilities across 7 states are recorded as making this. Every entry below says where the claim came from — a federal registry, the company’s own website, or the company itself. Nothing here is paid for or ordered by anything but name.
| Facility | Where | Recorded by |
|---|---|---|
| HELENA LABORATORIES CORPORATION | BEAUMONT, TX | federal registry |
| RICCA CHEMICAL | ARLINGTON, TX | federal registry |