The Prefilter,hood,laminar Flow,labo, cataloged under National Stock Number 6640-01-577-2699, is classified within Federal Supply Class 6640 (Laboratory Equipment and Supplies) of the Instruments and Laboratory Equipment group. The manufacturer of record is Germfree Laboratories, Llc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6640-01-577-2699 |
| Primary Part Number | BZ-PF4 |
| Item Name | Prefilter,hood,laminar Flow,labo |
| FSC / FSG | 6640 / 66 — Laboratory Equipment and Supplies |
| Manufacturer | Germfree Laboratories, Llc |
| 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 |
| Part Number | Manufacturer |
|---|---|
| BZ-PF4 PRIMARY | Germfree Laboratories, Llc (USA) |
| Reference | Meaning |
|---|---|
| 6640NCM093664 | 5/1 Secondary reference Defense Medical Standardization Board |
| 13145 | 5/1 Secondary reference U.S. Government activity |
NSN 6640-01-577-2699 is a Prefilter,hood,laminar Flow,labo, manufactured by Germfree Laboratories, Llc, classified under FSC 6640, Laboratory Equipment and Supplies. Status: active.
NSN 6640-01-577-2699 has 1 manufacturer part number on file: BZ-PF4 (Germfree Laboratories, Llc).
Key specifications for BZ-PF4: Special Features: PREFILTERS FOR USE WITH LAMINAR FLOW HOOD BZ4-SS; BOX OF 12; Part Name Assigned by Controlling Agency: PREFILTER LAMINAR FLOW HOOD 12S; End Item Identification: 6640-01-493-8582 HOOD, LAMINAR FLOW, LABORATORY. 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.