Metal Cleanliness Testing

Surface cleanliness testing instrument for measuring oil, grease and cleaning fluid contamination on metal surfaces.

Monitoring cleanliness on manufactured metal parts during and after the cleaning process is imperative to ensure surfaces are free of contaminants before the next manufacturing process e.g. assembly, sealing, gluing, painting, printing, lacquering etc.  This metal cleanliness tester also known as the “CleanoSpector” is a simple, handheld non-destructive cleanliness inspection instrument for measuring organic oil, grease or cleaning fluid contamination on a metal substrate and can be used on the production line or in the laboratory.

The CleanoSpector instrument is an easy-to-use fluorescence measuring device and has been specially designed for this purpose. The test results are measured in the degree of the cleanliness of metal parts  in percentage format. It enables the parts to be evaluated directly at the process and  the level of cleanliness is measured by the touch of a button with the result shown within seconds.

Advantages of Using the Fluorescence Method for Measuring Metal Cleanliness:

  • Enables detection of various organics like residual oil, grease, cooling lubricants, separating agents etc.
  • Non-destructive test method
  • Fluorescence intensity increases with amount of contamination (layer thickness)
  • Direct comparison of parts with same contamination.
  • Direct and fast measurement on surfaces
  • Small measurement point provides high lateral resolution

The measuring principle is simple – the instrument detects contamination due to its’ fluorescence which is excited by a UV light emitting diode (UV LED).  The fluorescence intensity depends on the amount of contamination found on the surface at the measuring point, i.e. the higher the fluorescence the more contamination found on the surface.

 Application Examples for Metal Cleanliness Inspection: 
  • Automotive crank shafts, pistons, cam shafts and con-rods after cleaning.
  • Pistons for hydraulic pumps before hardening – residual contamination has an influence on the steel quality in the hardening furnace
  • Stainless steel pipes before coating (vehicle construction)
  • Gear case parts before coating or bonding
  • Fluxing agent residues on gold bond pads on ceramic substrates
  • Medical instruments and implants before delivering to the user
  • Cleanliness of parts before vacuum or powder coating
  • Controlling layer thickness of anti-corrosive agents, oils, waxes or bonding agents.

If you would like to discuss this product please contact one of our Sales Team and they will be happy to answer any questions you may have.


  • Mobile and robust measuring instrument for flexible use at the process and in the laboratory
  • Intuitive operation: simple & fast measurement
  • Automatic calibration on reference surface

Application Fields:

  • Contact-free cleanliness inspection of part surfaces at push of button
  • Quality assurance of industrial cleaning processes
  • Layer thickness measurement e.g. of corrosion protection


  • Highest product quality by monitoring limit values
  • Documentation of slightest contamination on various shaped surfaces
  • Efficiency by process optimisation.

Packing List:    CleanoSpector measuring instrument, suitcase, stand, mains adapter, 2 spacers, USB-cable, calibration standard N0 (no fluorescence), operating instruction, calibration certificate

CleanlinessPower Supply
Measuring Range:0 – 100%Mains Adapter/USB100… 240V
Resolution:0.1%Li-Ion battery3.6V / 1,950mAh min 8h operating time
Power Consumption:2.5W max.
Fluorescence intensity 
Measuring Range:0 – 2,000 RFU (Relative Fluorescence Unit)Interface, Memory, Dimension & Weight
Max. Deviation:0.5% of measuring rangeUSB-interface:data transfer
Resolution:0.1RFUDisplay:LCD, illuminated
Excitation*:365nm, max. 150mWMeasuring Profiles:254
Detection*:460nmMemory:8,000 measuring values/profile
Measuring Point*:D=1mmDimensions (L x W x H)
Measuring Distance*:4.7mmHand-held Device:129 x 82 x 48mm
* standard valuesSensor Head:95 x 50 x 30mm
Weight (device):530g
Layer Thickness
Measuring rangeUser-defined



Order CodeDescription
15-1301CleanoSpector Metal Cleanliness Measuring Instrument



Order CodeDescription
15-2301SITA-ProcessLog Software for Windows XP/VISTA/7/8 (CD-ROM) licence per device
15-3301Calibration standard N1 for verification of CleanoSpector
15-3305Cleaning Kit