The Trichrome Stain Kit, cataloged under National Stock Number 6550-01-449-4351, 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 Sigma-Aldrich, Inc. Dba Sigma-Aldrich Sales, Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 6550-01-449-4351 |
| Primary Part Number | HT15-1KT |
| Item Name | Trichrome Stain Kit |
| FSC / FSG | 6550 / 65 — In Vitro Diagnostic Substances, Reagents, Test Kits and Sets |
| Manufacturer | Sigma-Aldrich, Inc. Dba Sigma-Aldrich Sales, Inc |
| 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 | EA |
| Part Number | Manufacturer |
|---|---|
| HT15-1KT PRIMARY | Sigma-Aldrich, Inc. Dba Sigma-Aldrich Sales, Inc (USA) |
| Reference | Meaning |
|---|---|
| 97-0656 | 5/1 Secondary reference U.S. Government activity |
| HT15-1KT | 3/9 Design control — primary reference Sigma-Aldrich Corporation |
| HT15 | 5/9 Secondary reference Sigma-Aldrich Corporation |
| HT-15 | 5/9 Secondary reference Sigma Chemical Co Sigma Diagnostics Div |
NSN 6550-01-449-4351 is a Trichrome Stain Kit, manufactured by Sigma-Aldrich, Inc. Dba Sigma-Aldrich Sales, Inc, classified under FSC 6550, In Vitro Diagnostic Substances, Reagents, Test Kits and Sets. Status: active.
NSN 6550-01-449-4351 has 1 manufacturer part number on file: HT15-1KT (Sigma-Aldrich, Inc. Dba Sigma-Aldrich Sales, Inc).
Key specifications for HT15-1KT: Special Features: 4 BOTTLES OF SOLUTIONS INCLUDED IN KIT: 250ML EA; BIEBRICH SCARLET-ACID FUCHSIN SOLUTION; PHOSPHOMOLYBDIC ACID SOLUTION; PHOSPHOTUNGSTIC ACID SOLUTION; PHOSPHOTUNGSTIC ACID SOLUTION; & ANILINE BLUE SOLUTION.; Part Name Assigned by Controlling Agency: TRICHROME STAIN KIT 250ML BT 4S. 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.