Rhopoint IQ-S 20°/60°/85°

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Rhopoint IQ-S 20°/60°/85°

The Rhopoint IQ-S is an innovative goniophotometer that provides key measures of surface appearance, gloss, haze and RIQ for detecting surface defects like orange peel or surface haze. Where standard gloss meters only measure gloss, the IQ-S is a cost effective solution for detection and measurement of all surface imperfections. The IQ-S is a specially designed instrument built specifically to match automotive interior gloss measurement standards. In addition IQ-S gloss measurements are fully compatible with existing Micro-TRI-gloss – S results. Dualgloss 20/60° or Trigloss 20/60/85° versions are close tolerance selected for maximum accuracy and resolution in all gloss applications.

The Rhopoint IQ-S measures

20/60/85° Gloss • Haze • Distinctness of image • Rspec • Goniophotometric curves


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: Matt Finish 85°, Mid Gloss 60°, High Gloss and Metallics 20°. Measurement Unit: GU.


The peak gloss value over a very narrow angle. Usage – RSPEC is very sensitive to small changes in texture and is used to identify subtle differences in surface smoothness. Measurement Unit: GU.


An optical effect caused by microscopic textures or residue on a surface. Visible Symptoms: Milky finish apparent on surface, loss of reflected contrast, halos and patterns seen around reflections of high intensity light sources. Specifically pertains to high gloss on materials such as metallic and mirrors. Causes: Poor dispersion, raw material incompatibility, additive migration, vehicle quality, stoving/drying/curing conditions, polishing marks, fine scratches, aging, oxidation, poor cleanliness/surface residue. Measurement Unit: LogHU.


A measure of how clearly a reflected image will appear in a reflective surface. Symptoms of Poor DOI: Orange peel, brush marks, waviness or other structures visible on the surface. 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. Measurement Scale: 0-100, 100 is a perfect smooth surface.


Same as DOI, Reflected Image Quality (RIQ) is used to detect Orange peel effects. However, the RIQ value provides high resolution results with better correlation to the human perception of surface textures, especially on high quality surfaces such as automotive paints. Measurement Scale: 0-100 whereas 100 represents a perfect smooth surface.


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.


  • Easy to read full color screen with adjustable brightness
  • 6 button touch sensitive interface
  • Fully automatic calibration with tile detection and verification for error-free calibration
  • Pocket sized instrument with integrated tile holder
  • Pass / fail for easy identification of non-conformances
  • Full onboard statistics (max, min, mean, S.D.)
  • On-board trend analysis graphs
  • Results batching with user definable names
  • Direct data input via Bluetooth – This allows each reading to be instantly transmitted to any PC package such as Excel, Word, SPC programs etc.
  • Software-free data transfer – USB download of results to PC without the need to install software


ModelRhopoint IQ-S
Gloss Measurement Specification
Measuring Angle 20°Improved accuracy and resolution on high gloss & metallic samples (>70GU when measured at 60°)
Measuring Angle 60°Universal angle– all gloss levels
Measuring Angle 85°Improved Resolution for Matt Finishes (
Measurement range20º: 0-2000GU / 60º: 0-1000GU / 85º: 0-199GU
Resolution0.1 GU
StandardsISO 2813, ASTM D523, ASTM D2457, DIN 67530, JIS 8741 (Conforms 60° & 85° / Verified Performance 20°)
Measurement range0-10GU / 10-100GU / 100-2000GU
Repeatability±0.1GU / ±0.2GU / ±0.2%
Reproducibility±0.2 GU / ± 0.5GU / ±0.5%
Gloss Calibration Standard
TraceabilityISO 17025 Certified Laboratory, BAM Traceable
Uncertainty0.4 GU
RSPEC Measurement Specification
Peak Specular Reflectance20° ±0.09905°
Measurement Range0-2000GU
Haze Measurement Specification
Near Specular ReflectanceMeasured at 17.2-19°, 21-22.8°; Switchable between Haze Units (HU) and Log Haze Units (LogHU)
StandardsASTM E430, ISO 13803
DOI Measurement Specification
Measurement range0-100
StandardsASTM D5767
RIQ Measurement Specification
Measurement range0-100
Measurement range12.75-27.25°, reported 14-26°
Angular ResolutionApprox. 0.02832°
Resolution0.1 GU
Instrument Specifications
Color ScreenHigh resolution illuminated color display; Brightness adjustable
ConstructionAll aluminium construction – enclosure, optics, calibration holder; magnetic calibration holder with in position detector
Statistical AnalysisMax, Min, Mean, S.D.; all measured parameters
Graphical AnalysisOn board trend analysis; Gloss and IQ Values
PowerRechargeable Lithium Ion; >17 Hours operation; >20,000 Readings/Charge
Operate fromInternal Battery/USB/Mains Charger
Recharge TimeRechargeable Lithium Ion; >17 Hours operation; >20,000 Readings/Charge
Data MemoryMains charger: 4hrs
Data TransferBluetooth; PC & MAC compatible; USB Connection
Dimensions & Weight65 x 140 x 50mm (H x W x D); 790g
Interface LanguagesEnglish, German, French, Spanish, Italian, Chinese, Japanese, Turkish

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