Drum Handling
 Drying Time/Gelation
 Film Flaws
 Film Thickness
 Impact & Flexibility
 Lab Apparatus
 Measuring Instruments
 Optical Instruments
 pH & Conductivity
 Surface Profile
 Surface Tension
Home  >>  Products  >>  Color/Gloss  >>  IQ Flex 20

IQ FLEX 20 Goniophotometer

ASTM D4039, D5767, E430; ISO 13803

IQ FLEX 20 Goniophotometer

The Rhopoint IQ GLOSS-HAZE-DOI-GONIOPHOTOMETER has been established as the reference instrument for measuring reflective appearance. Combined gloss, haze and orange peel (DOI/RIQ values) information has made the IQ essential for controlling appearance finish.

The Rhopoint IQ FLEX 20 brings this technology to a new format specifically designed for curved surfaces and small & delicate parts.

  • Measurement of curved surfaces (requires an adapter)
  • Measurement of small surfaces
  • Bespoke measuring heads



Easy customization for every application
The Rhopoint IQ FLEX 20 can be customized with magnetically attached adaptor plates. These can be easily interchanged for different applications:

  • Reduced measurement spot sizes (2 & 4mm) for small parts and curved surfaces.
  • Bespoke 3D printed adaptor jigs for repeatable control of small parts, buttons and controls.
  • Non-contact plates for in-line applications.
  • Alternative rubber, felt or plastic adaptors can be specified for delicate surfaces.

In-line Applications
Non-contact adaptor plates allow the measurement head to be fixed above moving products on line or robotized. USB or Bluetooth remote control allows easy integration with production

The IQ FLEX 20 Quantifies Surface Quality Problems That are Invisible to a Standard Glossmeter
The Rhopoint IQ FLEX 20 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 common effects which reduce appearance quality.

The IQ FLEX 20 Measures
20° Gloss • RSPEC • Reflectance Haze Reflected Image Quality • Distinctness of Image • Goniophotometer Curves

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

Reflectance Haze Compensation - The instrument compensates for reflection from within the coating for highly reflective pigments, metallic coatings and speciality pigments, allowing the haze of any painted surface to be measured.

Reflected Image Quality (RIQ) - RIQ is used to quantify effects such as orange peel and surface waviness. This new parameter gives higher resolution results compared to Distinctness of Image (DOI) measurement and better mimics human perception of surface texture, especially on high quality finishes such as automotive. Symptoms of poor RIQ: 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 - Fast measurement of all parameters. Full on-board statistics with graphical trend analysis and reporting.

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

Rapid Data Transfer - Software-free data transfer. USB connection to PC instantly recognizes the device as a drive location which facilitates the quick transfer of files using Windows Explorer or similar.

Power - 20,000+ readings per charge. The instrument is rechargeable via USB/PC or mains.

Goniophotometric Curves - Different types of surface textures produce identifiably shaped reflectance profile. This goniophotometric data can be downloaded to PC for further analysis and comparison via the USB cable or Bluetooth Data Widget.

Technical Data

Technical Data
  20° Gloss
Range (GU) : 0-100 / 100-2000
Repeatability: 0.2 (GU) / 0.2%
Reproducibility: 0.5 (GU) / 0.5%
Resolution (GU) : 0.1
Measurement Area: 6.0 x 6.4 (mm)
Range (Log HU): 0-500
Repeatability (Log HU): 1
Reproducibility (Log HU): 10
Resolution (GU): 0.1
Measurement Area (mm): 6.0 x 6.4
Standards: ASTM E430, D4039
Range: 0-2000 GU 0-100 0-100
Repeatability: 0.2% 0.2 0.2
Reproducibility: 0.5% 0.5 0.5
Resolution: 0.1 0.1 0.1
Standards: Rhopoint ASTM E430 Rhopoint
  Instrument Data
  • Full color easy to read screen
  • Auto-rotating measurement screen
  • Adjustable brightness
  • 6 button touch sensitive interface
  • All aluminium construction - enclosure, optics, standard holder
  • Single button push to measure all parameters
  • Fast measurement
  • Results batching with user definable names
Statistical Analysis:
  • SD all measured parameters
Graphical Analysis:
  • On board trend analysis Gloss and IQ values
  • Rechargeable lithium ion
  • 17+ hours operation
  • 4,000+ readings per charge
Recharge Time:
  • Mains charger: 4hrs
  • 8 MB = 999 readings
  • User definable alphanumeric batching
Data Transfer:
  • PC compatible
  • USB connection, no software install required
Battery Type: Rechargeable lithium ion
Operation (Hours): 17+
Readings Per Charge: 20,000+
Memory: 8MB, 2,000 readings
Operating Temperature: 60-104°F (15-40°C)
Operating Humidity: Up to 85%, non condensing
Commodity Code: 9027 5000
Dimensions: 150mm x 79mm x 34mm (without head) (H x W x D)
Weight: 550g
Packed Weight: 1.5kg
Packed Dimensions: 180mm x 330mm x 280mm (H x W x D)


  • Automotive - Body
  • Yacht Manufacturers
  • Mobile Phones
  • Tablet PC
  • Automotive Interior
  • Curved Surfaces
  • PVC
  • Plastics Industry
  • Polished Metals

Measuring Heads

Measurement of Curved Surfaces*
Conventional gloss instruments are best suited to large flat areas and test panels, as curved surfaces cause measurement errors. The small footprint of the IQ FLEX 20 makes it much more effective on curved surfaces than a conventional glossmeter; its compact size and shape also allows access to difficult to reach areas. * Requires an adaptor IQ FLEX 20 Goniophotometer Curved Surfaces
Curved surfaces
Measurement of Small Surfaces
The Rhopoint IQ FLEX 20 can be customised with the magnetically attached adaptor plates. These can be easily interchanged for different applications. IQ FLEX 20 Goniophotometer Small Part Measurement IQ FLEX 20 Goniophotometer Small Part Measurement
  Reduced measurement spot sizes (4 & 2mm) for small parts
Bespoke Measuring Heads
Bespoke 3D printed adaptor jigs for repeatable control of curved surfaces.
IQ FLEX 20 Goniophotometer Concave Surface Accessory IQ FLEX 20 Goniophotometer Convex Surface Accessory IQ FLEX 20 Goniophotometer Complex Curve Accessory
Concave surface Convex surface Complex curve

Display Examples

IQ FLEX 20 Goniophotometer Display
IQ FLEX 20 Goniophotometer Display IQ FLEX 20 Goniophotometer Display IQ FLEX 20 Goniophotometer Display
Simultaneous measurement of all parameters, date and time stamped. Displays full statistics for the reading in the current batch. Graphical reporting for quick trend analysis. Pass / fail parameters can be defined for instant identifcation of nonconformances
IQ FLEX 20 Goniophotometer Display Goniophotometric Curves - Different types of surface textures produce identifably shaped refectance profile. This data can be downloaded to a PC for further analysis and comparison via the USB cable or Bluetooth Data Widget.

Direct data input via Bluetooth wireless - Instantly transmit measured readings directly to programs such as MS Excel on your PC / tablet to greatly simplify the reporting process.

Data Example

IQ Flex 20 Video


Competitive Pricing


Prices subject to change    Prices listed in US dollars for domestic shipments within US, Canada, & Mexico only    Export orders require quotations - click here for a quote     For more info call us 1-800-762-2478 or 954-946-9454.
Item Number Item Prices

Instrument with Flex head 20°, Calibration tile with holder, USB data cable, Novo-Gloss Multi Gauge Software, USB, Instruction manual, Bluetooth data app., Example Excel spreadsheets and Instructional videos
GL-213920 IQ Flex 20 Meter Complete $5,711.00
We are an established North American Distributor for Rhopoint Instruments, and have been providing, servicing, calibrating and certifying their high quality instruments for over 33 years.


  By Category Email Registry How to Order Contact Info
  By Industry Trade Shows Request Quote History
  New Products Test Lab Info Order Form FAQ's
  Monthly Product Articles/Links Repairs/Service Policies

  © 2020 Paul N. Gardner, a BYK Instruments Company | Contact | Policies Facebook  YouTube  Blogger