The Filter Unit,microporous, cataloged under National Stock Number 6640-01-353-5688, is classified within Federal Supply Class 6640 (Laboratory Equipment and Supplies) of the Instruments and Laboratory Equipment group. The manufacturer of record is Nalge Co Div of Sybron Corp. Government technical data includes 9 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6640-01-353-5688 |
| Primary Part Number | 156-4045 |
| Item Name | Filter Unit,microporous |
| FSC / FSG | 6640 / 66 — Laboratory Equipment and Supplies |
| Manufacturer | Nalge Co Div of Sybron Corp |
| Status | ACTIVE |
| Absorbent Pad | NOT INCLUDED |
| Filtering Area | 17.526 SQUARE CENTIMETERS NOMINAL |
| Unit Package Type | PACKAGE |
| Filter Disk Size Accommodated | 50.0 MILLIMETERS MM |
| Unit Package Quantity | 12 |
| Accessory Components and Quantity | WHITE CELLULOSE ACETATE MEMBRANE 1; COTTON-STUFFED SIDE-ARM W/QUICK DISCONNECT TUBING ADAPTER 1 |
| Load Capacity | 500.0 MILLILITERS |
| Material | PLASTIC POLYSTYRENE |
| Grid Markings | NOT INCLUDED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 156-4045 PRIMARY | Nalge Co Div of Sybron Corp (USA) |
| T4216-25 | Cardinal Health 200, Llc (USA) |
| Reference | Meaning |
|---|---|
| 09-740-28D | 5/9 Secondary reference Fisher Scientific Company L.l.c. |
| 28199-600 | 5/9 Secondary reference Vwr Scientific Inc |
| T4216-25 | 5/9 Secondary reference Baxter Healthcare Corp Baxter Scientific Products Div Government Sales |
| 92-1-14-26 | 5/1 Secondary reference Air Force Medical Logistics Office |
| F91L379 | 5/1 Secondary reference Air Force Medical Logistics Office |
| 247-054 | 5/9 Secondary reference Curtin Matheson Scientific Inc |
NSN 6640-01-353-5688 is a Filter Unit,microporous, manufactured by Nalge Co Div of Sybron Corp, classified under FSC 6640, Laboratory Equipment and Supplies. Status: active.
NSN 6640-01-353-5688 has 2 manufacturer part numbers on file: 156-4045 (Nalge Co Div of Sybron Corp), T4216-25 (Cardinal Health 200, Llc).
Key specifications for 156-4045: Absorbent Pad: NOT INCLUDED; Filtering Area: 17.526 SQUARE CENTIMETERS NOMINAL; Unit Package Type: PACKAGE; Filter Disk Size Accommodated: 50.0 MILLIMETERS MM. 9 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.