The Methyl Violet Stain, cataloged under National Stock Number 6550-01-449-4551, is classified within Federal Supply Class 6550 (In Vitro Diagnostic Substances, Reagents, Test Kits and Sets) of the Medical, Dental, and Veterinary Equipment group. The manufacturer of record is Cd Acquisition Holdings Inc Dba Columbia Diagnostics. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: PG.
| Parameter | Value |
|---|---|
| NSN | 6550-01-449-4551 |
| Primary Part Number | H4430A |
| Item Name | Methyl Violet Stain |
| FSC / FSG | 6550 / 65 — In Vitro Diagnostic Substances, Reagents, Test Kits and Sets |
| Manufacturer | Cd Acquisition Holdings Inc Dba Columbia Diagnostics |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | PG |
| Part Number | Manufacturer |
|---|---|
| ES5500 | Redwood County Telephone Company (USA) |
| H4430A PRIMARY | Cd Acquisition Holdings Inc Dba Columbia Diagnostics (USA) |
| Reference | Meaning |
|---|---|
| 97-0663 | 5/1 Secondary reference U.S. Government activity |
| HEINZ BODY STAIN | 5/1 Secondary reference Cd Acquisition Holdings Inc Dba Columbia Diagnostics |
NSN 6550-01-449-4551 is a Methyl Violet Stain, manufactured by Cd Acquisition Holdings Inc Dba Columbia Diagnostics, classified under FSC 6550, In Vitro Diagnostic Substances, Reagents, Test Kits and Sets. Status: active.
NSN 6550-01-449-4551 has 2 manufacturer part numbers on file: ES5500 (Redwood County Telephone Company), H4430A (Cd Acquisition Holdings Inc Dba Columbia Diagnostics).
Key specifications for H4430A: Special Features: 100 ML, 2'S; Part Name Assigned by Controlling Agency: METHYL VIOLET STAIN 100ML PG 2S. 0 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.