National Stock Number
6640-01-436-8331
National Stock Number (NSN) 6640-01-436-8331, or NIIN 014368331, (test paper and color chart,ph) was assigned September 27, 1996 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. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 2 suppliers. Today, 2 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 2 suppliers are deemed design controlled or valid supply parts. ISO Group has several sources of supply for this NSN.
This part number has not been procured by the US Government in over 5 years.
There has been very little 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 Mar 19, 2010, this NSN's acquisition method was noted as: Not established. Not established.
This NSN is assigned to Item Name Code (INC) 50880. [A GROUP OF ITEMS DESIGNED FOR DETERMINING HYDROGEN ION CONCENTRATION OF A LIQUID/SOLUTION, COMPRISED OF TEST PAPER,HYDROGEN ION AND AT LEAST ONE COLOR CHART. 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 6640014368331 does not contain precious metals.
This information was last updated on Aug 01, 2025.