The Formaldehyde Solution, cataloged under National Stock Number 6550-01-360-5691, 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. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: BT.
| Parameter | Value |
|---|---|
| NSN | 6550-01-360-5691 |
| Primary Part Number | HT10132-1L |
| Item Name | Formaldehyde Solution |
| FSC / FSG | 6550 / 65 — In Vitro Diagnostic Substances, Reagents, Test Kits and Sets |
| Manufacturer | Sigma-Aldrich, Inc. Dba Sigma-Aldrich Sales, Inc |
| Status | ACTIVE |
| Primary Container Content Quantity | 1.000 LITERS |
| Supplementary Features | MEDSEP ITEM FOR DOD, SIGMA CHEMICAL CO |
| Medical Designation and Grade | MODIFIED |
| Primary Container Type | BOTTLE |
| Usage Design | FOR HISTOLOGIC FIXATIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Hazardous per DLA record (HMIC Y) |
| Criticality Code | X |
| Unit of Issue | BT |
| Part Number | Manufacturer |
|---|---|
| HT10132-1L PRIMARY | Sigma-Aldrich, Inc. Dba Sigma-Aldrich Sales, Inc (USA) |
| Reference | Meaning |
|---|---|
| BOUIN'S SOLUTION | 5/9 Secondary reference Sigma Chemical Co |
| B1639 | 5/9 Secondary reference Sigma Chemical Co |
| HT10132-1L | 3/9 Design control — primary reference Sigma-Aldrich Corporation |
| F92E274 | 5/1 Secondary reference Air Force Medical Logistics Office |
| BOUINS SOLUTION | 5/1 Secondary reference Sigma-Aldrich, Inc. Dba Sigma-Aldrich Sales, Inc |
| HT10-1-32 | 5/9 Secondary reference Sigma Chemical Co |
NSN 6550-01-360-5691 is a Formaldehyde Solution, 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 6550-01-360-5691 has 1 manufacturer part number on file: HT10132-1L (Sigma-Aldrich, Inc. Dba Sigma-Aldrich Sales, Inc).
1 possible match (shared part number, not a government interchangeability claim): 6640-01-508-4416. Verify interchangeability with system specifications before substitution.
Key specifications for HT10132-1L: Primary Container Content Quantity: 1.000 LITERS; Supplementary Features: MEDSEP ITEM FOR DOD, SIGMA CHEMICAL CO; Medical Designation and Grade: MODIFIED; Primary Container Type: BOTTLE. 5 specifications are documented in the U.S. Government catalog.
Hazardous per DLA record (HMIC Y). 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.