National Stock Number
6630-01-644-0273
National Stock Number (NSN) 6630-01-644-0273, or NIIN 016440273, (comparator,color) was assigned April 20, 2015 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There is only one manufacturer part number 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 not been procured by the US Government in over a year. There have been 2 contracts issued for this part number, with 2 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: SPE2DH22P0570, SPE2DH17V3295. The total value of the awarded contracts has been US$ 228.46.
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 May 02, 2015, 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) 26010. [AN INSTRUMENT USED TO DETERMINE HYDROGEN ION CONCENTRATION, RESIDUAL CHLORINE CONTENT, PHOSPHATE CONTENT AND/OR OTHER CHARACTERISTICS OF WATER BY VISUALLY COMPARING A SAMPLE, TO WHICH A SPECIFIED QUANTITY OF AN APPROPRIATE INDICATOR SOLUTION HAS BEEN ADDED, WITH A COLOR STANDARD. THE COLOR STANDARDS USED FOR THESE TESTS ARE MOUNTED IN A SUITABLE HOLDER AND GRADED TO REPRESENT THE INDICATOR COLORS FOR VARIOUS PH VALUES, CONCENTRATION OF CHLORINE, PHOSPHATE, OR OTHER SUBSTANCE.]. 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 6630016440273 does not contain precious metals.
This NSN is associated to Schedule B 9027505000: other chemical analysis instruments and apparatus, nesoi. The Schedule B End Use is listed as laboratory testing instruments. NAICS classification category 334516: analytical laboratory instrument manufacturing.
This information was last updated on Aug 01, 2025.