The NOA 280i measures nitric oxide, nitrite, nitrate or nitrosothiols in most biological samples.

Sievers NOA Specifications

Operating Specifications
Sensitivity Gas: < 1 ppb
Liquid: ~1 picomole
Range Gas: <1–500,000 ppb
Liquid: Nanomolar to millimolar
Response Time Electronics: 67 milliseconds to 90% full scale
Lag Time: 1 second
Repeatability Gas: ± 5%
Liquid: ± 5–10%
Sample Size Gas: 10–300 mL/min
Liquid: 0.001–5 mL
Display Back-lit LCD screen
ppb/ppm or mV
Outputs Analog: 0–1V, 0–10 V
Digital: RS-232 (9600-38.4K baud)
Printer: Parallel port
Data Sampling Rate 0.002–32 samples/second
Power Requirements 120 V, 60 Hz (6A)
100 V, 50 or 60 Hz (7A)
230 V, 50 Hz (3A)
NOA Height: 16 in (41 cm)
Width: 6.2 in (16 cm)
Length: 20 in (51 cm)
Weight: 35 lbs (16 kg)
Vacuum Pump with
Installed Trap		 Height: 14.5 in (37 cm)
Width: 7.5 in (19 cm)
Length: 19 in (48 cm)
Weight: 47 lbs (21.5 kg)
Certifications Declaration of conformity (click here)
Operating Environment
Ambient Temperature 32° to 86°F (0° to 30°C)
Relative Humidity 0–90%
Fuse Requirements
Main Fuse 100 VAC model: T, 10A, 250V
120 VAC model: T, 5A, 250V
230 VAC model: T, 5A, 250V
Ozone Fuse 100 VAC model: T, 200mA, 250V
120 VAC model: T, 200mA, 250V
230 VAC model: T, 100mA, 250V