National Stock Number
6640-00-901-0729
National Stock Number (NSN) 6640-00-901-0729, or NIIN 009010729, (test paper,hydrogen ion) was assigned January 1, 1960 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are 4 manufacturer part numbers associated with this NSN. 3 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 2 suppliers. 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 33 contracts issued for this part number, with 33 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 2 different suppliers. The last contract numbers awarded were: SPE2DH25V2140, SPE2DH24V2986, SPE2DH23V2205, SPE2DH23V1784, SPE2DH23V1689. The total value of the awarded contracts has been US$ 6,678.23.
This NSN is unique to one weapons system.
There has been a small 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 Dec 31, 2013, 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) 18297. [A CHEMICALLY-TREATED TEST PAPER USED WITH A COLOR CHART TO DETERMINE BY COLOR COMPARISON THE PH VALUE OF A LIQUID/SOLUTION. FOR ITEMS INCLUDING A COLOR CHART, SEE TEST PAPER AND COLOR CHART,PH. EXCLUDES LITMUS PAPER.]. 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 6640009010729 does not contain precious metals.
This information was last updated on Jul 01, 2025.