The Rhopoint IQ-S is an easy-to-use and cost effective appearance measuring instrument that not only measure gloss, but also capable of quantifying surface defects such as haze and orange peel.

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°


Model Rhopoint 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 range 20º: 0-2000GU / 60º: 0-1000GU / 85º: 0-199GU
Resolution 0.1 GU
Standards ISO 2813, ASTM D523, ASTM D2457, DIN 67530, JIS 8741 (Conforms 60° & 85° / Verified Performance 20°)
Measurement range 0-10GU / 10-100GU / 100-2000GU
Repeatability ±0.1GU / ±0.2GU / ±0.2%
Reproducibility ±0.2 GU / ± 0.5GU / ±0.5%
Gloss Calibration Standard
Traceability ISO 17025 Certified Laboratory, BAM Traceable
Uncertainty 0.4 GU
RSPEC Measurement Specification
Peak Specular Reflectance 20° ±0.09905°
Measurement Range 0-2000GU
Haze Measurement Specification
Near Specular Reflectance Measured at 17.2-19°, 21-22.8°; Switchable between Haze Units (HU) and Log Haze Units (LogHU)
Resolution 0.1HU
Repeatability ±0.5HU
Reproducibility ±1.5HU
Standards ASTM E430, ISO 13803
DOI Measurement Specification
Measurement range 0-100
Resolution 0.1
Repeatability ±0.2
Reproducibility ±0.5
Standards ASTM D5767
RIQ Measurement Specification
Measurement range 0-100
Resolution 0.1
Repeatability ±0.2
Reproducibility ±0.5
Measurement range 12.75-27.25°, reported 14-26°
Angular Resolution Approx. 0.02832°
Resolution 0.1 GU
Instrument Specifications
Color Screen High resolution illuminated color display; Brightness adjustable
Construction All aluminium construction – enclosure, optics, calibration holder; magnetic calibration holder with in position detector
Statistical Analysis Max, Min, Mean, S.D.; all measured parameters
Graphical Analysis On board trend analysis; Gloss and IQ Values
Power Rechargeable Lithium Ion; >17 Hours operation; >20,000 Readings/Charge
Operate from Internal Battery/USB/Mains Charger
Recharge Time Rechargeable Lithium Ion; >17 Hours operation; >20,000 Readings/Charge
Data Memory Mains charger: 4hrs
Data Transfer Bluetooth; PC & MAC compatible; USB Connection
Dimensions & Weight 65 x 140 x 50mm (H x W x D); 790g
Interface Languages English, 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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