Concrete Clarity Meter

the first DOI meter for concrete in the world (CCM)
SKU: GM-14500-1

Concrete Clarity Meter

Standards: ISO 2813, ISO 7668; ASTM D 523, D 2457; DIN 67530, JIS 8741

Specifications & Guidelines: Polished Concrete Definition - D100.0, Bonded Abrasive Polished Concrete Definition - D101.0, Burnished Polished Concrete Definition - D102.0, Hybrid Polished Concrete Definition - D104.0, Surface Coated Concrete Definition - D103.0





Concrete Clarity Meter

The Polished Concrete Industry has been searching for a solution to its ongoing difficulty with how to quantify a nice looking shiny Polished Concrete Floor, with a clear and simple measurement.
Gloss checker meters were meant to measure a floor without any coating to determine whether the floor met the design specifications. It did not take long for coatings to be applied to a floor to make it glossier and smoother. After the coating was applied to a poorly finished floor, a gloss meter measured a much higher value of gloss. Less time was consumed in the expensive mechanical work, but it achieved the goal of the designers who did not know any better. 
Unfortunately, these coatings are diminished by abrasion, so just constant normal walking will destroy the appearance over a short period of time.

Haze and DOI-RIQ images

Two Haze Samples and Three Clarity samples with similar gloss

The above image clearly shows two samples of Haze. The Concrete Clarity Meter also measures this variable, which is not desirable on polished concrete floors or any similar surface. Haze diminishes as the DOI (Distinctness of Image) - RIQ (Reflected Image Quality) increases. 

The lower three images all have the SAME GLOSS VALUE. They ALL HAVE THE SAME GLOSS! However, the DOI - RIQ levels are extremely different ranging from close to zero to close to 100, proving that DOI – RIQ is the only accurate method to measure the quality of a polished concrete surface.

Mechanical roughness gauges to measure smoothness or roughness, however, you call them, are not any better than gloss meters; coatings and gloss enhancers fool them too easily. Coatings fill the voids and crevices in the concrete floor and voila, a smooth and glossy concrete floor.

Some time ago the Concrete Polishing Association took on a project to find a method that would be foolproof and easy to use, and also affordable. We provided meters to them for their testing on many floors from East to West and North to South, to see how different variables (machines, weight, aggregate, etc.) from each corner of the country affected outcomes for this new Concrete Clarity Meter. Results were very POSITIVE.

Samples of Beautifully Finished Floors:




Polished floor example

Work performed by Cuviello Concrete.


polished floor example

Mustang reflected off a Polished Concrete Floor

polished floor example

Work in progress for a High Clarity success


Concrete Clarity Meter

High Clarity DOI of 82.1 yet low Gloss 
**The Concrete Clarity Meter (CCM) is 2 angle ONLY instrument


high contrast floor

Nice high contrast floor producing decent Clarity at a mid-Gloss




Concrete Clarity Meter

This Concrete Clarity Meter is handheld, easily transportable, lightweight, and easy to use. It is also accurate, repeatable and cannot be fooled. Finally, waxes and coatings will no longer fool an instrument or operator. The Polished Concrete Industry found a solution. 
True mechanically polished floors that shone like a mirror had high marks and floors with poorly finished surfaces with coatings had low marks.

Engineers, architects, and general contractors now have a tool to determine within seconds if the floor is what was requested and paid for!

The Concrete Clarity Meter measures Clarity on Concrete. The Clarity term is chosen to easily describe the level of how the concrete surface compares to a mirror. If a surface is shiny but hazy, it gets low points. If it shines and clear reflections are seen while looking at the floor, it gets high marks. High marks are measured as units of RIQ, “Reflected Image Quality”, some people also referred to them as DOI, “Distinctness of Image”.

Concrete Clarity Meter Display

Readings from a very High DOI on a floor in Las Vegas. 
**The Concrete Clarity Meter (CCM) is 2 angle ONLY instrument

DOI was found to measure the best surface appearance properties. As a floor is being abraded, and thus finer and finer scratches are created, the Concrete Clarity Meter can start measuring an increasing DOI while gloss is stable.
DOI is a precursor to gloss values. As the refinement of the concrete continues, DOI increases and gloss also starts to increase. 1500 to 3000 final grit properly finished concrete floors with maximum refinement between each abrasion step will look more like a mirror or a calm lake than a concrete floor.The concrete clarity meter measures the steps in between each successive pass easily. Final high values of DOI over 80 meant the floor was finished properly with each successive pass of abrasion removing the previous set of scratches. This procedure produced a long-lasting, easily cared for the floor without waxes or coatings. 

Concrete Clarity Meter RIQ

Note: both the high RIQ and GLOSS and low Haze all pointing to a quality finish. 
**The Concrete Clarity Meter (CCM) is 2 angle ONLY instrument

A newer version of the meter introduced a new measurement called RIQ. RIQ replaced DOI as the better measurement. RIQ measures at lower values and thus has more resolution, making it better for the polished concrete industry as a whole.

For a Polished Concrete Contractor, the Imbotec Clarity DOI meter is an invaluable tool in the bidding process to differentiate you from your competitors. Scientifically prove the quality of your work to all your customers. This tool differentiates you as being the professional one.


The Concrete Clarity Meter is an invaluable tool as determined by the Polishing Association and as seen by Concrete Polishing educational institutions across the United States. It is easily used and understood. 

North America’s Premier Concrete Clarity Meter supplier and only Factory Authorized Repair and Calibration Facility. Get your Concrete Clarity Meter from Imbotec Group.



Now you can Rent it and test before you buy, Only from Imbotec.

Not sure if the CCM Haze and Gloss meter is the correct solution for your measurement application? Then why not rent it and see for yourself. The benefits of being able to measure, DOI ( Distinctness of Image), Haze, RSPEC and gloss all in one instrument are great.


The CCM measures not only gloss but also other image quality parameters such as DOI, Haze 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 like; orange peel, haze effects 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 )
  • Hazemeter ( reflectance haze )
  • Measures RSPEC
  • 20° glossmeter for high gloss finishes

In a single fast measurement, the CCM captures information about the gloss and texture of a sample surface. 
Combined gloss, haze 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.


  • Gloss: Resolution 0.1 GU • Repeatability 0.2 GU • Reproducibility 0.5GU
  • Measurement range: 20º: 0 – 2000 GU 60°: 0 – 1000 GU
  • RSPEC: Peak Specular Reflectance @ 20° +/- 0.09905° Measurement range: 20°: 0-2000GU
  • Haze: Near Specular Reflectance measured at 17-19°, 21-23° Resolution 0.1 HU • Repeatability 0.2 HU • Reproducibility 1.5 HU
  • RIQ: Resolution 0.1% • Repeatability 0.2% • Reproducibility 0.5% Measurement Range: 0-100%
  • DOI: Resolution 0.1% • Repeatability 0.2% • Reproducibility 0.5% Measurement Range: 0-100%
  • Measurement spot: 20° - 0.24 in x 0.25 in (6mm x 6.4mm), 60° - 0.24 in x 0.47 in (6mm x 12mm)
  • Memory: 999+ readings
  • Power: AC adapter rechargeable in 4 hours
  • Battery life: 17 hrs+ continuous operation or 20,000+ readings
  • Memory: Onboard memory for 999+ readings with full goniphotometric profiles
  • Operating Temperature: 60°F - 104°F (15°C - 40°C)
  • Humidity: Up to 85%, non-condensing
  • Dimensions: 2.56 in (w)x 5.1 in (h)x 2.0 in (d)
    [65(w) x 140(h) x 50(d) mm]
  • Weight: 20.8 Oz (590g)


  • DIN EN ISO 2813 Determination of specular gloss of non-metallic paint films at 20 degrees, 60 degrees, and 85 degrees
  • ASTM D523 Standard Test Method for Specular Gloss
  • ASTM D2457 Standard Test Method for Specular Gloss of Plastic Films and Solid Plastics
  • DIN 67530 Reflectometers a means for gloss assessment of plane surfaces of paint coatings and plastics
  • JIS Z 8741 Specular glossiness - Method of measurement
  • ISO 7668 Anodized aluminum and aluminum alloys - Measurement of specular reflectance and specular gloss at angles of 20 degrees, 45 degrees, 60 degrees or 85 degrees
  • ASTM E430 Standard Test Methods for Measurement of Gloss of High-Gloss Surfaces by Abridged Goniophotometry
  • ASTM D5767Standard Test Methods for Instrumental Measurement of Distinctness-of-Image Gloss of Coating Surfaces


Gloss meters are widely used to measure the reflective qualities of products. However this information tells us only how much light is reflected, but nothing about the quality of a surface.

Effects such orange peel, haze and polishing marks distort reflections in a surface, which reduce visual appearance but cannot be measured with traditional glossmeter. In short, two surfaces which have very different reflective properties could have exactly the same gloss value.

The CCM allows the user to measure DOI, Haze and RSPEC values and hence control the surface textures that reduce the perceived surface quality of the product.

Typical Applications

  Paints and Coatings Paints and Coatings Finishes on boats Yacht Manufacturers
  Metal polishing Metal Polishers Polishing Stone and Concrete Polished Stone and Concrete
  Consumer electronics finishes Smart Phone, Tablet PC and Laptop Covers Wood finishe Wood Coatings
  Automotive finishes Automotive Printing ink finish Printing Ink
  Automotive re-finishes Automotive re-finish Powder coatings Powder Coating
  Furniture finishes Furniture Plastics industry finishes Plastics Industry

Reasons to buy the Rhopoint IQ 20 60

  • Best in class accuracy with ISO 9001 Certificate and Traceability
  • EASY DOI - "Distinctness Of Image" Analysis
  • Reflectance Haze Measurement Included in either Haze or Log Haze unit
  • RIQ - "Reflected Image Quality" Analysis, improved DOI measurement
  • Fully Automatic Calibration with tile detection
  • Advanced Calibration Verification System guarantees error-free calibration
  • BLUETOOTH results downloaded to a PC Spreadsheet seamlessly
  • Transmit Data to any Smartphone, or Tablet
  • Results can also be download to PC via USB without the need to install software
  • Easy to read LARGE screen with Brightness Adjustment
  • Data, Statistics, Gloss Graphs, DOI Graphs, ALL in Brilliant COLOR
  • Results batching with user definable names
  • Pocket-sized instrument with integrated Magnetic tile holder
  • Single button press to measure all parameters
  • Fast and simultaneous measurement of all parameters in under 2 secs
  • Onboard memory for 999+ readings with full goniphotometric profiles
  • 20,000 measurements per Charge, 17 Hours of operation. Lithium-Ion Batteries

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

The CCM 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 handheld 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 CCM's 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 CCM Measures

  • 20° and 60° Gloss
  • Haze
  • Distinctness of Image - DOI
  • RIQ

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 CCM 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

Reflectance Haze

Reflectance Haze is an optical effect caused by microscopic texture or residue on a surface. A milky finish is apparent on the surface causing a loss of reflected contrast, halos and patterns can be seen around reflections of high-intensity light sources.

Causes: Poor dispersion, raw material incompatibility, additive migration, vehicle quality, stoving/drying/curing conditions, polishing marks, fine scratches, aging, oxidization, poor cleanliness/surface residue.


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

Included With the CCM

  • ISO 9001 Calibration Tile Certificate
  • ISO 9001 Instrument Certification
  • Magnetic Calibration Standard Tile ISO 9001
  • Rhopoint IQ Goniphotometric Gloss DOI Meter with Haze, RIQ and RSPEC
  • 2 Year Warranty
  • USB Cable
  • Gloss Meter Power Charger
  • Hard Nylon Case
  • Free Shipping in USA and Canada