The Rhopoint IQ-S is an advanced and versatile instrument designed for measuring surface appearance. With its user-friendly interface and advanced functions, this tool effortlessly measures gloss and evaluates surface defects like haze and orange peel. Whether you’re in the automotive, coating, or plastics industry, the Rhopoint IQ-S is a reliable and cost-effective solution for achieving the desired surface finish.

Rhopoint IQ-S 20°/60°/85°

The Rhopoint IQ-S is an innovative advanced measuring instrument that provides key measures of surface appearance like gloss, haze, Distinctness Of Image (DOI) and Reflected Image Quality (RIQ). It is a cost effective solution capable of detecting surface defects such as orange peel or reflection haze that are invisible to a standard gloss meter.

The IQ-S is designed and built specifically to match automotive interior gloss measurement standards. Its gloss measurements are fully compatible with existing Micro-TRI-gloss – S results.

Available in Dualgloss 20/60° or Trigloss 20/60/85° versions, both are close tolerance selected for maximum accuracy and resolution in all gloss applications.

The Rhopoint IQ-S measures


A measurement proportional to the amount of light reflected from a surface. For best results, the appropriate 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. This parameter is very sensitive to small changes in surface texture and is ideal for identifying subtle differences in surface smoothness.

Measurement Unit: GU.


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

Unit: Hu and LogHU.


A measure of how clearly a reflected image appears in a reflective surface. Visible Symptoms of Poor DOI includes Orange peel, brush marks, waviness or other structures visible on the surface and distorted reflected images.  Potential causes includes 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 indicating a perfect smooth surface.


Reflected Image Quality (RIQ) is used to detect Orange peel effects. However, the RIQ value provides higher resolution results with better correlation to the human perception of surface textures, especially on high quality surfaces like automotive paints.

Measurement Scale: 0-100; 100 indicating a perfect smooth surface.


IQ-S displays surface reflectance profiles 17-23°. The shape of the curve describes the interaction of light with the surface. Sharp curves, close to the specular direction, indicate a smooth and highly reflective surfaces.


Rhopoint IQ-S 20°/60°/85°

  • Full color screen with adjustable brightness and 6 button touch sensitive interface
  • Fully automatic calibration with tile detection and verification
  • Pocket-sized instrument with integrated tile holder
  • Pass/fail function
  • Full onboard statistics (max, min, mean, S.D.) and  trend analysis graphs
  • Results batching with user definable names
  • Software-free data transfer – Download data/results to PC via USB without the need to install software
  • Bluetooth compatible
  • On board memory for 999 readings

Rhopoint IQ-S 20°/60°/85°


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 (<10 GU when measured at 60°) (only for Rhopoint IQ-S 20/60/85°)
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

Rhopoint IQ-S 20°/60°/85°

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Rhopoint IQ-S 20°/60°/85°

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