The Buffer Solution,standard, cataloged under National Stock Number 6630-01-568-9285, is classified within Federal Supply Class 6630 (Chemical Analysis Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Myron L Company Dba Myron L Co. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 6630-01-568-9285 |
| Primary Part Number | PH4 |
| Item Name | Buffer Solution,standard |
| FSC / FSG | 6630 / 66 — Chemical Analysis Instruments |
| Manufacturer | Myron L Company Dba Myron L Co |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| PH4 PRIMARY | Myron L Company Dba Myron L Co (USA) |
| CHESBL047-500M | Bio-Strategy Pty Limited (AUS) |
| P0006570 | G2ss Pty Ltd (AUS) |
| Reference | Meaning |
|---|---|
| P0006570 | 5/9 Secondary reference Pall Australia Pty Ltd |
| P0013427 | 5/9 Secondary reference Pall Australia Pty Ltd |
NSN 6630-01-568-9285 is a Buffer Solution,standard, manufactured by Myron L Company Dba Myron L Co, classified under FSC 6630, Chemical Analysis Instruments. Status: active.
NSN 6630-01-568-9285 has 3 manufacturer part numbers on file: PH4 (Myron L Company Dba Myron L Co), CHESBL047-500M (Bio-Strategy Pty Limited), P0006570 (G2ss Pty Ltd).
2 possible matches (shared part number, not a government interchangeability claim): 6650-01-619-5087, 6630-01-662-6570. Verify interchangeability with system specifications before substitution.
Key specifications for PH4: Special Features: MAINTAINS ACCURACY, PERIODIC CALIBRATION; BUFFERED PHTHALATE SOLUTION, PH 4; RED; MOLD INHIBITED; ACCURATE TO WITHIN 0.01 PH UNITS AT 25 DEG C; 32 LIQUID OUNCES; COLOR-CODED FOR INSTANT IDENTIFICATION; NOT HAZMAT; CAN BE STORED AT ROOM TEMPERATURE DEGC; Part Name Assigned by Controlling Agency: BUFFERED PHTHALATE SOLUTION PH4 32OZ OZ; End Item Identification: ULTRAMETER II MODEL. 0 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.