NSN 6635-01-306-4527, 6635013064527
COUNTER,AIRBORNE PARTICLE

Federal Supply Classification: FSC 6635 - Physical Properties Testing and Inspection
National Item Identification Number: NIIN 013064527
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: (N) There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials.

Availability: Readily Available Qualified Suppliers: Currently qualifying suppliers

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DLMS^® Summary

National Stock Number 6635-01-306-4527

National Stock Number (NSN) 6635-01-306-4527, or NIIN 013064527, (counter,airborne particle) was assigned August 25, 1989 in the Federal Logistics Information System (FLIS). This NSN does not replace any other NSNs.

There are 2 manufacturer part numbers associated with this NSN. One of those 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 5 years.

Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Sep 02, 2000, this NSN's acquisition method was noted as: Not established. Not established.

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. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 6635013064527 does not contain precious metals.

This NSN is associated to Schedule B 9027803500: physical analysis instruments and apparatus, except using optical radiations, 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.

Technical Characteristics

SPECIAL FEATURES: (FEAT) TDESIGNED TO MONITOR PARTICLES AS SMALL AS 0.3 MICRON;DRAWS AIR INTO SENSIR AT RATE OF 1 CUBIC FOOT PER MINUTE;AIR FLOW PASSES THROUGH VIEW VOLUME-LIGHT GENERATED BY LASER DIODE;PARTICLES DEFLECT LIGHT ENERGY TO A SOLID STATE PHOTODIODE WHERE EACH BURST OF LIGHT IS CONVERTED TO A PULSE OF ELECTRICAL ENERGY;DIGITAL COUNTER ACCUMULATES THE PULSES ACCORDING TO SIZE SELECTED;SAMPLE AIR IS THEN FILTED,REMOVING ALL PARTICLES LARGER THAN 0.2 MICRON BEFORE AIR IS EXHAUSTED BACK INTO ROOM
GENERAL CHARACTERISTICS ITEM DESCRIPTION: (TEXT) SELECTABLE SIZE RANGES 0.3,0.5,1.0,5,10 MICRON AND LARGERS (SELECTABLE);FLOW RATE 1.0 CFM (0.1 OR 0.01 OPTIONAL);COINCIDENCE ERROR 5% AT 3,000,000 COUNTS;FIELD CALIBRATION CONTINUOUS;FACTORY CALIBRATION MONO-DISPERSED POLYSSTRYENE LATEX SPHERES TRACEABLE TO NIST;SELECTABLE SAMPLE PERIOD 0,1,6,10,60,600 SECONDS OR INFINITE;ALARM LIMITS 0,1,10,100,1000,10,000,100,000;LIGHT SOURCE SOLID STATE LASER DIODE;LASER LIFE 20,000 HOURS;COUNT DISPLAY 999,999;SIZE 12.5 INCHES WIDE BY 15.0 INCHES DEEP BY 6.5 INCHES HIGH;WEIGHT 28 LBS;POWER SOURCE 300 WATTS;VOLTAGE 115 VAC,60 HZ,220 VAC 50 HZ,100 VAC 50/60 HZ;0.3 MICRON SENSITIVITY;FRONT PANEL OPERATION;RS-232C OR RS-485 PARALLEL CENTRONICS
SPECIAL FEATURES: (FEAT) DESIGNED TO MONITOR PARTICLES AS SMALL AS 0.3 MICRON;DRAWS AIR INTO SENSIR AT RATE OF 1 CUBIC FOOT PER MINUTE;AIR FLOW PASSES THROUGH VIEW VOLUME-LIGHT GENERATED BY LASER DIODE;PARTICLES DEFLECT LIGHT ENERGY TO A SOLID STATE PHOTODIODE WHERE EACH BURST OF LIGHT IS CONVERTED TO A PULSE OF ELECTRICAL ENERGY;DIGITAL COUNTER ACCUMULATES THE PULSES ACCORDING TO SIZE SELECTED;SAMPLE AIR IS THEN FILTED,REMOVING ALL PARTICLES LARGER THAN 0.2 MICRON BEFORE AIR IS EXHAUSTED BACK INTO ROOM