Model #: rm400


The X-Rite RM400 is an affordable, entry-level 45/0 spectrophotometer designed for use in the retail paint industry that takes accurate sample measurements while tethered to a PC.

Fast paint matching more affordable than ever

Quickly determining formulation recipes for matching paint to customer-supplied samples enhances customer satisfaction and paint counter productivity. Quality measurement instruments for retail paint operations with low volumes of activity can be costly. With the affordable RM400, retail paint counters of any size and activity level can benefit from high quality color measurement at an extremely affordable price.

The RM400 is designed to be used with ColorDesigner PLUS software for formulating and storing paint color recipes. It is also compatible with most dispenser software programs for easy integration into any retail paint counter workflow.


  •  One-button operation means minimal operator training is required to achieve good color matches.
  •  With its 8mm aperture, the RM400 measures a variety of samples, including paper, plastic and painted surfaces.
  •  Operators can measure samples and immediately see calculated color values or spectral reflectance curves.
  •  Quickly look colors up or conduct a palette search to get to designed color fast.

The RM400 45/0 spectrophotometer from X-Rite is easy to use and simplifies the color formulation workflow for retail paint counters. It requires minimal maintenance and limited operator training, making it the ideal color measurement instrument investment for small retail paint operations.

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Short Term Repeatability - White 0.10 max DEab
Measurement Geometry 45/0
Inter-Instrument Agreement 0.30 DEab avg on BCRA tiles
Illumination Spot Size Not published
Image Contact During Measurements Contact
Lamp Life Not published
Light Source Gas-filled tungsten
Measurement Spot 8mm
Measurement Working Distance Zero
Patch Size 8 mm
Photometric Range 0 to 200% reflectance
Photometric Resolution 20 nm intervals
Spectral Analyzer DRS filter wheel
Spectral Interval 20 nm
Spectral Range 400-700 nm @ 20 nm
Spectral Reporting 400-700 nm @ 10 nm
Aperture 8 mm
Reflectance Aperture(s) 8 mm
Humidity 0 to 85% RH, non-condensing
Operating Temperature Range 10° to 40° C
Storage Temperature Range Not published
Minimum Order Quantity 1
Unit Color Gray
Dimensions (length, width, height) 7.5" L x 3.2" W x 3.3" H
Weight 9.9 oz (excluding base)
Package Dimensions (length, width, height) 13" L x 12" W x 6" H
Shipped Weight 6 pounds
Communication Interface RS-232
Instrument Display No display
Software Development Kit Yes
Voltage AC power supply, 100-240 VAC
Wattage Not published
Calibration White calibration
Internal Temperature & Humidity Sensor No
Measurement Background User-supplied
Scanning Capability No
Service Indicator No
Warranty 12 months

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Quick Compare

Short Term Repeatability - White .10 ΔE*ab on white ceramic 0.10 max DEab 0.04 CIELAB
Measurement Geometry d/8° 45/0 45/0 imaging spectrophotometer
Inter-Instrument Agreement 0.30 ΔE*ab avg. 0.30 DEab avg on BCRA tiles 0.30 avg CIELAB
Image Contact During Measurements Contact Non-Contact
Photometric Resolution 0.01% 20 nm intervals 10 nm intervals
Aperture 8 mm 2 to 12 mm
Dimensions (length, width, height)  26.4cm, 19.0cm, 22.0cm 7.5" L x 3.2" W x 3.3" H 9.75" W x 7.1" H x 7.25" D
Instrument Display No display No display

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