NSN 6550-01-599-2412, 6550015992412
REFERENCE STANDARD SET,PH

Federal Supply Classification: FSC 6550 - In Vitro Diagnostic Substances, Reagents, Test Kits and Sets
National Item Identification Number: NIIN 015992412
Codification Country: United States
Item Name Code: INC 77777
Criticality: (X) This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Hazardous Material Indicator Code: (Y) Information is in the Hazardous Materials Information Resource System (HMIRS).

Availability: Readily Available Qualified Suppliers: Currently qualifying suppliers

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DLMS^® Summary

National Stock Number 6550-01-599-2412

National Stock Number (NSN) 6550-01-599-2412, or NIIN 015992412, (reference standard set,ph) was assigned September 19, 2011 in the Federal Logistics Information System (FLIS). This NSN does not replace any other NSNs.

There are 3 manufacturer part numbers associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. Today, one supplier is listed as an Active supplier for this NSN. Of the active suppliers, only one supplier is deemed design controlled or valid supply parts.

This part number has been procured by the US Government within the last year, but shows no recent (last 90 days) procurement activity. There have been 66 contracts issued for this part number, with 64 awards given. There is moderate competition for this NSN. The US Government has awarded contracts to 6 different suppliers. The last contract numbers awarded were: SPE2DS25V4525, SPE2DS25V4525, SPE2DS25V4525, SPE2DS25V4525, SPE2DS25V4137. The total value of the awarded contracts has been US$ 6,235.44.

There has been a moderate amount of demand for this national stock number. The demand for this NSN originated from less than 5 countries. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Jun 21, 2012, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. This part is a commercial/non-developmental/off-the-shelf-item. Valid AMCs: 1, 2, 3, 4 and 5.

This NSN is assigned to Item Name Code (INC) 77777. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. Information is in the Hazardous Materials Information Resource System (HMIRS). NSN 6550015992412 does not contain precious metals.

This information was last updated on Aug 01, 2025.

Technical Characteristics

PART NAME ASSIGNED BY CONTROLLING AGENCY: (CXCY) PH COLOR BUFFER SOLUTION KIT
SPECIAL FEATURES: (FEAT) PH COLOR BUFFER SOLUTION KIT; USED FOR AUTOMATIC CALIBRATION AND ASSURANCE OF ACCURACY; SOLUTIONS ARE COLOR CODED; KIT INCLUDES: (1) 500 ML BOTTLE PH 4.01 SOLUTION (RED), (1) 500 ML BOTTLE PH 7.00 SOLUTION (YELLOW), AND (1) 500 ML BOTTLE PH 10.01 SOLUTION (BLUE)