Attachment 2-Statement of Work

STATEMENT OF WORK

FOR A

NANO-AEROSOL HYGROSCOPICITY- CLOUD CONDENSATION ANALYZER

30 October 2026

GENERAL

The Air Force Institute of Technology (AFIT) requires the Nano-Aerosol Hygroscopicity- Cloud Condensation Analyzer to improve understanding of the interrelationship of aerosol optical effects and their hygroscopicity (i.e. their tendency to absorb moisture from the ambient atmosphere relative humidity). Relationship depends on highly dynamic aerosol composition, source, and size. Faculty/students require this to fill critical field instrument gaps and enable 24/7 aerosol hygroscopicity characterization over wide-ranging aerosol mix and humidity conditions. The following specification lists the minimum requirements for 1 (ONE) Nano-Aerosol Hygroscopicity- Cloud Condensation Analyzer instrumentation: 1. Instrument must remain operational whether in a Laboratory environment or in extreme weather conditions.
2. Supersaturates aerosol particles in a vertical column with continuously wet walls and a longitudinal thermal gradient; subsequently activated particles are sized using an optical particle counter
a. Provides concentration number and size distribution of sampled air b. Enables determination of aerosol humidity and aerosol average humidity through pre-selected sizes and scanned super-saturation ratios. 3. The scanned super-saturation ratio range must be between 0.07% – 2.0% 4. The instrument can interface with a customer-provided differential mobility analyzer to enable automatic particle size selection spanning approx. 0.005 to 10 micrometers 5. Does not require the use of volatile / hazardous material such as aerosol condensation agents like butanol or radioactive / soft-x-ray sources. 6. Time required for supersaturation change: ~30 seconds for 0.2% change. 7. Operating environment: 5C to +35C; ambient relative humidity: 0 – 95%, non condensing
8. Instrument dimension and weight shall not exceed 35.0” H x 20” W x 20” D, 120 lbs., respectively.
9. Power requirement: 110-120VAC.
10. Instrument control and data analysis software executed using onboard computer for control and data logging
11. Instrument’s measurement raw data shall be available via vendor-supplied USB-toSerial RS-232 cable & null modem cable and in a format compatible with Microsoft® Windows operating systems and software, to simplify data analysis. 12. Equipment must be furnished by the original manufacturer and warranty for 1 year 13. Must include training from the original manufacturer for 3 people for 8 hours.