The Oxidase Test Reagent, cataloged under National Stock Number 6550-01-245-4365, 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 Remel Inc.. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: PG.
| Parameter | Value |
|---|---|
| NSN | 6550-01-245-4365 |
| Primary Part Number | R21540 |
| Item Name | Oxidase Test Reagent |
| FSC / FSG | 6550 / 65 — In Vitro Diagnostic Substances, Reagents, Test Kits and Sets |
| Manufacturer | Remel Inc. |
| Status | ACTIVE |
| Primary Container Type | AMPUL |
| Physical Form | LIQUID |
| Usage Design | USED TO AID IN THE DETECTION AND IDENTIFICATION OF MICRO-ORGANISMS |
| Total Primary Container Quantity | 50 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Hazardous per DLA record (HMIC Y) |
| Criticality Code | X |
| Unit of Issue | PG |
| Part Number | Manufacturer |
|---|---|
| R21540 | Oxoid Limited (GBR) |
| R21540 PRIMARY | Remel Inc. (USA) |
| Reference | Meaning |
|---|---|
| 3550268 | 5/9 Secondary reference Difco Laboratories |
| 3550-26-8 | 5/9 Secondary reference Difco Laboratories |
| 3550-26-08 | 5/9 Secondary reference Difco Laboratories |
| SPOT-TEST | 5/9 Secondary reference Difco Laboratories |
NSN 6550-01-245-4365 is a Oxidase Test Reagent, manufactured by Remel Inc., classified under FSC 6550, In Vitro Diagnostic Substances, Reagents, Test Kits and Sets. Status: active.
NSN 6550-01-245-4365 has 2 manufacturer part numbers on file: R21540 (Oxoid Limited), R21540 (Remel Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 6550-01-344-6097, 6550-01-370-5021. Verify interchangeability with system specifications before substitution.
Key specifications for R21540: Primary Container Type: AMPUL; Physical Form: LIQUID; Special Features: 0.75 ML FILL GLASS AMPULS IN PROTECTIVE PLASTIC SQUEEZE DISPENSERS; Part Name Assigned by Controlling Agency: OXIDASE TEST REAGENT 0.75 ML AMPULS 50 PER PKG. 4 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.