NIST awarded a purchase order to TSI Incorporated on September 22, 2026, for one aerosol electrometer, a total small business set-aside, with a ceiling value of $30,364.00. The order was issued under a firm fixed price, commercial procurement and carries a completion date of January 11, 2027.
Performance occurs at NIST's Gaithersburg, Maryland facility (100 Bureau Drive, Building 301, Room B129). The electrometer must measure total net charge on aerosol particles between 2 nanometers and 5 micrometers with RMS noise of 0.25 fA at 1-second averaging, operate on 120V 60 Hz AC power, and integrate with TSI 3082 electrostatic classifiers and TSI 3756 and 3775 condensation particle counters. The instrument requires remote control via Ethernet, USB, or RS-232 interfaces, analog voltage output, Windows-compatible software, and a one-year warranty beginning upon government acceptance. Delivery is FOB Destination within 16 weeks of order receipt during normal business hours Monday through Friday, excluding federal holidays. The underlying solicitation was posted August 14, 2026, with a due date of September 21, 2026.