Rhopoint IQ 20/60/85, DOI Meter - Triple Angle, Haze, RIQ, Trigloss

Manufacturer: Rhopoint
SKU: GM-14400

Rhopoint IQ 20/60/85

  • The Rhopoint IQ measures not only gloss but also other image quality parameters such as DOI and RSPEC , it is the only handheld instrument that profiles how light is reflected from a surface.

    Standard glossmeters only measure how much light is reflected and are not sensitive to effects which dramatically reduce appearance quality such as; orange peel and polishing marks which distort reflections in a surface, seriously reducing visual appearance but cannot be measured with traditional glossmeter.

    • DOI / RIQ Meter, ( quantifies orange peel )
    • Measures RSPEC
    • 20° glossmeter for high gloss finishes

    In a single fast measurement, the Rhopoint IQ captures information about the gloss and texture of a sample surface. 
    Combined gloss and orange peel (DOI/RIQ values) information have made the IQ essential for controlling appearance finish in the paints and coatings sector, particularly for high tech., automotive and aerospace coatings.


    Rhopoint IQ Display


    Rhopoint IQ Operation:

    • Full color display
    • Auto-rotating measurement screen
    • Adjustable brightness
    • Quick efficient interface

    Rhopoint IQ Measurement:

    • Single button push to measure all parameters
    • Fast measurement
    • Results can be instantly transmitted to any PC package such as Excel, Word, SPC programs etc.

    Rhopoint IQ Statistical:

    • Max, min, mean, SD
    • All measured parameters

    Rhopoint IQ Graphical:

    • Trend analysis of all measured values
    • Gloss, RSPEC and DOI values

    The Rhopoint IQ quantifies surface quality problems that are invisible to a standard glossmeter

    The Rhopoint IQ goes beyond gloss measurement by differentiating between two samples with EQUAL GLOSS VALUES. This is achieved by measuring the image quality ( is it like a mirror ?), it is the only hand held instrument that profiles how light is reflected from a surface, thus presenting you with the easily understood information to show you the better sample being measured.

    Standard glossmeters only measure how much light is reflected and are not sensitive to effects which dramatically reduce appearance quality. The Rhopoint IQ DOI "Distinctness of Image" Quality Meter easily accomplishes the measurement of appearance. Information is displayed with one value, not multiple confusing values, but immediately and easily seen.

    Bro Tiles

    The Rhopoint IQ Measures

    • 20° Gloss
    • Distinctness of Image - DOI
    • RIQ
    • RSPEC

    What is DOI ?

    DOI, Distinctness of Image, is a measurement indicating the QUALITY OF THE GLOSS. How clearly can a reflected image appear.

    Symptoms of poor DOI: Orange peel, brush marks, waviness or other structures visible on the surface. Poor finishing. Reflected images are distorted.

    Causes: Application problems, incorrect coating flow, coating viscosity too high/low, sag or flow of coating before curing, incorrect particle size/distribution, overspray, improper flash/recoat time, inter coat compatibility, incorrect cure times and cure temperature.

    What is RSPEC ?

    RSPEC is the peak gloss value over a very narrow-angle.
    RSPEC is very sensitive to small changes in texture and is used to identify subtle differences in surface smoothness.

    What is RIQ ?

    RIQ is a superior measurement to DOI with expanded capabilities.RIQ quantifies ORANGE PEEL qualitatively as well as measuring surface waviness. RIQ is a HIGH RESOLUTION DOI measurement and correlates better with human vision and perception.

    Orange Peel, brush marks, waviness, cause reflected images to be distorted.

    Problems that can be detected using the Rhopoint IQ include:

    • Incorrect Coating Flow
    • Coating Viscosity
    • Sag or Coating Flow before Curing
    • Particle Size Distribution
    • Paint Overspray
    • Improper Flash, Recoat Time
    • Inter Coat Compatability
    • Incorrect Cure Time
    • Cure Temperature


    A measurement proportional to the amount of light reflected from a surface.

    Geometry: For best results the correct measurement geometry should be chosen based on the reflectance of the material. 20° is the ideal angle to measure high gloss surfaces such as automotive finishes'


    Goniphotometric Profiles

    Printed Material

    The instrument displays surface reflectance profiles 17-23°. The shape of the curve describes how the light has interacted with the surface. Sharp curves close to the specular direction indicate smooth highly reflective surfaces.


    IQ Reflectance 20

    An on screen goniophotometric profile shows the distribution of the reflected light