National Stock Number
6640-00-641-3508
National Stock Number (NSN) 6640-00-641-3508, or NIIN 006413508, (test paper and color chart,hydrogen ion) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). NIIN 006413508 was cancelled on August 2, 2006, with a cancelled status of "Item is Cancelled WITHOUT Replacement." There is no known replacement specified for this stock number. This NSN does not replace any other NSNs.
There are no manufacturer part numbers associated to this NSN.
This part number has not been procured by the US Government in over 5 years.
This NSN is assigned to Item Name Code (INC) 08038. [INC 08038 CANCELLED/REPLACED BY ,INC 50880, FIIG T149-A, APP-KEY AC , ON 092294 INC 08038 CANCELLED/REPLACED BY ,INC 50880, FIIG T149-A, APP-KEY AC , ON 092194 AN ITEM DESIGNED FOR DETERMINING HYDROGEN ION CONCENTRATION OF A LIQUID. INCLUDES CHEMICALLY TREATED SENSITIZED TEST PAPER(S) AND COLOR COMPARISON CHART(S). THE TREATED PAPER, AFTER IMMERSION AND COMPARISON WITH THE COLOR CHART, INDICATES HYDROGEN ION CONCENTRATION. EXCLUDES:LITMUS PAPER, ACS.]. This item does not have a critical feature such as tolerance, fit restrictions or application. Nuclear hardness properties have not been determined (not valid for input). There is no information in the HMIRS; however, the NSN is in an FSC in Table II of Federal Standard 313 and an MSDS may be required by the user. The requirement for an MSDS is dependent on a hazard determination of the supplier or the intended end use of the product. NSN 6640006413508 does not contain precious metals.
This information was last updated on Aug 01, 2025.