Specification	Details
Model	X-Rite i1Publish Pro 3 Plus Professional Color Management Solution
Spectral Engine	i1Pro 3 Plus i1® technology, holographic diffraction grating with 128 pixel diode array and built-in wavelength check
Spectral Range	380 nm to 730 nm
Physical Sampling Interval	3.5 nm
Optical Resolution	10 nm
Spectral Reporting	380 nm to 730 nm in 10 nm steps
Sampling Rate	400 measurements per second
Measurement Geometry	45°/0° ring illumination optics, ISO 13655:2017
Measurement Aperture	8 mm (0.31") diameter. Effective measurement aperture during scanning depends on patch size and measurement speed.
Light Source	i1Pro 3 Plus full-spectrum LED illumination
Measurement Conditions	M0, M1 (D50), M2, and M3 (Polarized), ISO 13655:2017 compliant
Optical Brightener Compensation (OBC)	Optical Brightener Compensation supported with i1Profiler software when combined with compatible automated chart readers
Calibration	Manual calibration using external ceramic white reference
Measurement Background	White, ISO 13655:2017 for measurements on backup board
Minimum Patch Size (Spot Mode)	6 x 6 mm (0.24" x 0.24") width x height
Minimum Patch Size (Scanning Mode)	6 x 7 mm (0.24" x 0.28") with i1iO 7 x 7 mm (0.28" x 0.28") with sensor ruler 10 x 7 mm (0.40" x 0.28") without sensor ruler
Maximum Scan Length	260 mm (10.24")
Inter-Instrument Agreement	0.3 ΔE00 average, 0.8 ΔE00 maximum deviation from X-Rite manufacturing standard at 23°C (73.4°F) on 12 BCRA tiles (D50, 2°)
Short-Term Repeatability	0.05 ΔE00 on white (D50, 2°, mean of 10 measurements every 3 seconds on white)
Emission Measurement Range	0.2 to 5000 cd/m² on a typical LCD monitor
Emission Repeatability	x,y ±0.002 typical (5000 K, 80 cd/m²)
Ambient Light Measurement	Spectral irradiance [mW/nm/m²], illuminance [lux], cosine corrected diffuser light measurement head
Interface	USB 1.1
Power Supply	Device powered by USB. No additional charger or battery required. USB 1.1 high-power device.
Operating Temperature	10°C (50°F) to 35°C (95°F)
Operating Humidity	0% to 80% non-condensing
Storage Temperature	0°C to 45°C (32°F to 113°F)
i1Pro 3 Plus Device Dimensions	Length 162 mm, width 69 mm, height 64 mm (6.4" x 2.7" x 2.5")
i1Pro 3 Ruler Dimensions	337 mm x 102 mm (13.3" x 4.0")
i1Pro 3 Backup Board Dimensions	355 mm x 265 mm (14.0" x 10.4") folded or 355 mm x 400 mm (14.0" x 15.7") unfolded
Weight	285 g (10.1 oz)