The Reference Standard,carbon Residu, cataloged under National Stock Number 6640-01-509-7079, is classified within Federal Supply Class 6640 (Laboratory Equipment and Supplies) of the Instruments and Laboratory Equipment group. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 6640-01-509-7079 |
| Item Name | Reference Standard,carbon Residu |
| FSC / FSG | 6640 / 66 — Laboratory Equipment and Supplies |
| 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 |
| Reference | Meaning |
|---|---|
| 73124 | 3/9 Design control — primary reference Alcor Petroleum Instruments Inc |
NSN 6640-01-509-7079 is a Reference Standard,carbon Residu, classified under FSC 6640, Laboratory Equipment and Supplies. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 2520-01-645-4310, 4820-01-706-3113. Verify interchangeability with system specifications before substitution.
Key specifications for 6640-01-509-7079: Special Features: 1 OZ CARBON RESIDUE REFERENCE SAMPLE; HIGH 24.1 PCT CARBON OZ; End Item Identification: USED ON MCRT-140 MICROCARBON RESIDUE TESTER. 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.