The Buffer Solution,standard, cataloged under National Stock Number 6550-01-142-5554, is classified within Federal Supply Class 6550 (In Vitro Diagnostic Substances, Reagents, Test Kits and Sets) of the Medical, Dental, and Veterinary Equipment group. The manufacturer of record is Ricca Chemical Company, Llc Dba Ricca Chemical Div Ricca Chemical Company. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: BT.
| Parameter | Value |
|---|---|
| NSN | 6550-01-142-5554 |
| Primary Part Number | 1551-16 |
| Item Name | Buffer Solution,standard |
| FSC / FSG | 6550 / 65 — In Vitro Diagnostic Substances, Reagents, Test Kits and Sets |
| Manufacturer | Ricca Chemical Company, Llc Dba Ricca Chemical Div Ricca Chemical Company |
| Status | ACTIVE |
| Ph Value Range | +0.0 TO 7.0 |
| Supplementary Features | D-DAY ITEM FOR DOD |
| Primary Container Type | BOTTLE |
| Physical Form | LIQUID |
| Primary Container Unit Quantity | 1 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Hazardous per DLA record (HMIC Y) |
| Criticality Code | X |
| Unit of Issue | BT |
| Part Number | Manufacturer |
|---|---|
| 1551-16 PRIMARY | Ricca Chemical Company, Llc Dba Ricca Chemical Div Ricca Chemical Company (USA) |
| Reference | Meaning |
|---|---|
| SB107-500 | 5/9 Secondary reference Fisher Scientific Company L.l.c. |
| SO-B-107 | 5/9 Secondary reference Fisher Scientific Company L.l.c. |
NSN 6550-01-142-5554 is a Buffer Solution,standard, manufactured by Ricca Chemical Company, Llc Dba Ricca Chemical Div Ricca Chemical Company, classified under FSC 6550, In Vitro Diagnostic Substances, Reagents, Test Kits and Sets. Status: active.
NSN 6550-01-142-5554 has 1 manufacturer part number on file: 1551-16 (Ricca Chemical Company, Llc Dba Ricca Chemical Div Ricca Chemical Company).
1 possible match (shared part number, not a government interchangeability claim): 5325-01-435-2176. Verify interchangeability with system specifications before substitution.
Key specifications for 1551-16: Ph Value Range: +0.0 TO 7.0; Supplementary Features: D-DAY ITEM FOR DOD; Primary Container Type: BOTTLE; Physical Form: LIQUID. 5 specifications are documented in the U.S. Government catalog.
Hazardous per DLA record (HMIC Y). 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.