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  • Concrete

Concrete Clarity Meter (CCM)


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The Concrete Clarity Meter (CCM)

The Rhopoint IQ Concrete Clarity Meter measures Reflected Image Quality; it is the only hand held instrument that profiles how light is reflected from a surface. Glossmeters are usually used to measure the shininess of a surface but are not sensitive to other effects which reduce appearance quality.

The Concrete Clarity Meter (CCM) can measure

  • 20/60° Gloss
  • Reflectance haze
  • Reflected image quality (RIQ)
  • Distinctness of Image (DOI)

Unlike a standard glossmeter the IQ Concrete Clarity Meter has the unique capability of measuring and detecting
quality problems caused by microscopic texture in the surface that cause haze and orange-peel effects which lead to poor Distinctness of Image (DOI).

These factors can seriously affect the visual impact and reflective quality of many coated, painted and polished
surfaces. By measuring the quality of the reflected image it accurately profiles how light is reflected from a surface.

Distinctness of Image (DOI)

A measure of how clearly a reflected image will appear in a reflective surface and is used to quantify effects such as orange peel and surface waviness.

Orange peel dramatically reduces appearance quality without affecting gloss readings. The Rhopoint IQ Concrete Clarity Meter with DOI measurement can quantify the differences.

Surface with poor DOI

Haze is a common problem associated with coatings and polished materials. Surfaces with haze have a “milky” finish with a “shallow” reflected image. This important characteristic is directly measured with the Concrete Clarity Meter.

Surface with high haze.

Images courtesy of Curviello Concrete

Reflectance Haze

An optical effect caused by microscopic texture or residue on a surface.

Visible Symptoms: A milky finish is apparent on
the surface with a loss of reflected contrast. Halos and patterns can be seen around reflections of high intensity light sources.

Causes: Resin transfer, lack of refinement, burnish
and polishing marks, fine scratches, poor cleanliness/surface residue.

Distinctness of Image (DOI) Gloss

DOI is the sharpness of images of objects produced by reflection at a polished surface, sometimes called image clarity.

Measurement by Image Clarity Meter: The DOI, Image Clarity Value, obtained from this test method, range from 0 to 100 with a value of 100 representing perfect DOI (image clarity).


Haze is the cloudiness or milky appearance of images of objects produced by reflection in a polished surface.

Measurement by Glossmeter (ASTM D4039): The Haze Index, obtained from this test method, is computed using the numeric difference between the value of specular gloss at 60° and the value of specular gloss at 20°.

Measurements for Compliance

The Image Clarity Meter and Glossmeter must be calibrated.
The minimum number of tests distributed across the polished surface should be three for areas up to 1000ft² and one additional test for each 1000ft² or fraction thereof. This applies to both the Image Clarity Value and Haze Index.
The mean (average) values of the test results should be used to evaluate compliance with the chart.


Simultaneous measurement of all parameters, results are date/time stamped.
Statistics per measured parameter.
Graphical reporting for quick trend analysis.

Easy Batching

User definable batch names and batch sizes for quicker and more efficient reporting.

Software-free Rapid Data Transfer

USB connection to a computer instantly recognises the device as a drive location which facilitates the quick transfer of files using Windows File Explorer or similar programs.

Direct Data Input via Bluetooth

Instantly transmit measured readings directly to programs such as Microsoft Excel on your computer, tablet or smart phone to greatly simplify the reporting process.


  • Full colour easy to read screen
  • Adjustable brightness
  • 6 button touch sensitive interface


  • All aluminium construction – enclosure,  optics, standard holder
  • Integrated calibration holder with in-position
    detector for error-free calibration



20° Gloss
Range0 - 100 GU100 - 2000 GU
Repeatability0.2 GU0.2%
Reproducibility0.5 GU0.5% *
Resolution0.1 GU
Measurement Area6mm x 6.4mm
StandardsISO 2813  |  ASTM D523  |  ISO 7668  |  ASTM D2457  |  DIN 67530  |  JIS Z 8741
60° Gloss
Range0 - 10 GU10 - 100 GU100 - 1000 GU
Repeatability0.1 GU0.2 GU0.2%
Reproducibility0.2 GU0.5 GU0.5% *
Resolution0.1 GU
Measurement Area6mm x 12mm
StandardsISO 2813  |  ASTM D523  |  ISO 7668  |  ASTM D2457  |  DIN 67530  |  JIS Z 8741
* A mirror gloss calibration standard is required to achieve this reproducibility
Range0 - 500 Log HU
Repeatability1 Log HU
Reproducibility10 Log HU
Resolution0.1 Log HU
Measurement Area6mm x 6.4mm
StandardsASTM E430  |  ASTM D4039 | ISO 13803
Range0 - 2000 GU0 - 100 GU0 - 100 GU
Repeatability0.2%0.2 Log HU0.2 Log HU
Reproducibility0.5%0.5 Log HU0.5 Log HU
Measurement Area6mm x 6.4mm
StandardsRhopointASTM E430Rhopoint


Instrument Information
Battery TypeRechargeable lithium ion
Operation Time17+ hours
Readings per Charge20,000+
Memory8MB, 2,000 readings
Operating Temperature15°C - 40°C (60°F - 104°F)
Operating HumidtyUp to 85% (non condensing)
Commodity Code9027 5000
Dimension & Weights
Dimensions140mm (H) x 50mm (W) x 65mm (D)
Instrument Weight390g
Packed Weight1.75kg
Packed Dimensions360mm (H) x 290mm (W) x 140mm (D)
Included Accessories
Certificates:Instrument calibration certificate
Tile calibration certificate
Cables:USB data & mains cable
Wrsit strap
USB Containing:Instruction manual
Bluetooth data app
Example Excel spreadsheets
Novo-Gloss Multi Gauge software
Instructional videos
Calibration TileHigh gloss calibration tile with cleaning cloth
Sample Positioning Templates
Quick Start Guide
Order Codes
Rhopoint IQ Concrete Clarity MeterA6000-013 CCM

To ensure accurate and reliable results, Rhopoint Novo-Gloss Instruments are supplied with standards calibrated and certified according to ISO 17025 UKAS.

Free extended warranty

Free extended 2 year warranty: Requires registration at www.rhopointinstruments.com/help-services/forms-feedback/instrument-registration/ within 28 days of purchase. Without registration, 1 year standard warranty applies.

Free light source warranty

Guaranteed for the life of the instrument.

Calibration and service

Fast and economic service via our global network of accredited calibration and service centres. Please visit www.rhopointinstruments.com/help-services/calibration-servicing/ for detailed information.




Application Notes & White Papers

Answers to common questions about our instruments and measurements

Why measure gloss?

Gloss is an aspect of the visual perception of objects that is as important as colour when considering the psychological impact of products on a

Read More »

What is RSpec?

RSpec is the peak reflectance measured over a very narrow angular band in the specular direction (+/-) 0.0991º. RSpec is very sensitive to any texture

Read More »