The Test Tube,urea Determination, cataloged under National Stock Number 6640-00-445-6950, is classified within Federal Supply Class 6640 (Laboratory Equipment and Supplies) of the Instruments and Laboratory Equipment group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6640-00-445-6950 |
| Item Name | Test Tube,urea Determination |
| FSC / FSG | 6640 / 66 — Laboratory Equipment and Supplies |
| Status | ACTIVE |
| Style Designator | BEADED RIM ROUND BOTTOM |
| Tubing Outside Diameter | 24.500 MILLIMETERS MINIMUM AND 25.500 MILLIMETERS MAXIMUM MM |
| Capacity Rating | 12.500 MILLILITERS NOMINAL |
| Nondefinitive Spec/std Data | B CLASS |
| Scale Reading Direction | BOTTOM TO TOP OUTSIDE SINGLE SCALE |
| Calibration Function | TO CONTAIN |
| Unable to Decode | UNABLE TO DECODE |
| Material | GLASS |
| Scale Graduation Unit | 12.5 MILLILITERS SINGLE INTERVAL SINGLE SCALE |
| Scale Graduation Unit Range | +0.0 TO 25.0 MILLILITERS SINGLE INTERVAL SINGLE SCALE |
| Primary Container Unit Quantity | 1 |
| 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 |
|---|---|
| DDT731A | 4/1 Identification reference U.S. Government activity |
NSN 6640-00-445-6950 is a Test Tube,urea Determination, classified under FSC 6640, Laboratory Equipment and Supplies. Status: active.
Key specifications for 6640-00-445-6950: Style Designator: BEADED RIM ROUND BOTTOM; Overall Length: 198.00 MILLIMETERS MINIMUM AND 202.00 MILLIMETERS MAXIMUM MM; Tubing Outside Diameter: 24.500 MILLIMETERS MINIMUM AND 25.500 MILLIMETERS MAXIMUM MM; Capacity Rating: 12.500 MILLILITERS NOMINAL. 11 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.