The Test Tube, cataloged under National Stock Number 6640-01-623-8464, is classified within Federal Supply Class 6640 (Laboratory Equipment and Supplies) of the Instruments and Laboratory Equipment group. The manufacturer of record is Rtx Scientific, Incorporated Dba Refrigeration Technologies. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6640-01-623-8464 |
| Primary Part Number | RT751M |
| Item Name | Test Tube |
| FSC / FSG | 6640 / 66 — Laboratory Equipment and Supplies |
| Manufacturer | Rtx Scientific, Incorporated Dba Refrigeration Technologies |
| 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 |
NSN 6640-01-623-8464 is a Test Tube, manufactured by Rtx Scientific, Incorporated Dba Refrigeration Technologies, classified under FSC 6640, Laboratory Equipment and Supplies. Status: active.
NSN 6640-01-623-8464 has 2 manufacturer part numbers on file: 860-3810 (Christof Fischer Gmbh), RT751M (Rtx Scientific, Incorporated Dba Refrigeration Technologies).
Key specifications for RT751M: Special Features: METHOD FOR MEASURING MOISTURE IN REFRIGERANT GAS. 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.