Pinhole Tester (for Aluminum Foil)

Pinhole Tester for Aluminum Foil (also known as the Light Box), is an equipment which can help detect pin holes in aluminum foils used in food and pharmaceutical packaging.

Pinholes are micro leaks in the foil surface which can reduce the shelf life or stability of the product they are used to protect.

This equipment can be used only on opaque materials.

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Pinhole Tester (for Aluminum Foil)            EXR Series

The Pinhole Tester is suitable to detect (visually) pin hole defects in Aluminum Foils used in Food and Pharmaceutical packaging.

This equipment is also known as the Light Box or Light Table for Pinhole Inspection.

Technical Specifications :

  • Table Top, Compact Model.
  • High Intensity, Diffused Light Source.
  • Tempered Glass on top of light source.
  • Blackout Hood to prevent room ambient light from falling on the Foil Surface. So you can test even with the room lights ON.
  • Inspection Area : 10 x 10 inches (± 0.5 inch)
  • Integrated, Digital Event Counter (pinhole counter)
    • LCD Display
    • Inbuilt lithium battery, having an expected life span of over 5 years.
  • Manual Count switch to keep track of pinhole count.
  • ON/OFF switch for light source. 

Typical Pinhole count found in Aluminum Foils :

Foil Thickness (µm) Typical Pinhole / Sq Mtr.
11 60
14 40
18 30
20 20
> 25 0

Source : Indian Standards :15392-2003

DQ/IQ/OQ Documentation are supplied with models specific for Pharmaceutical Companies.

Warranty :                  12 Months (Ex-Factory)

Utilities Required :

  1. Power Supply (Current : Max 5 Amps) :
    1. For India (Domestic Model) : 230 Volts A.C., 50 Hz. Clean power.
    2. For Outside India (Export Model) : As per your country’s power rating.

Operating Procedure :

  1. Flip up (open) the blackout hood.
  2. Place the film / foil on the glass top.
  3. Flip down (close) the blackout hood.
  4. Press the RESET switch for the Digital Event Counter.
  5. Switch on the Power button.
  6. The Hi-Intensity lamps inside the chamber will glow.
  7. View the foil surface from Peep Hole / Viewing Window on top of the blackout hood.
  8. Count the number of visible pinholes (You will see light coming out of the pinholes).
  9. For every pinhole, press the COUNT button once.
  10. This will increase the counts on the Digital Counter.
  11. Open hood to circle the pinholes, if further analysis is required.
  12. Slide the film again and repeat the pinhole counting for length equivalent to 1 square meter or 1550 square inch. E.g. if the foil width is 6 inches, the length of testing should be 258.34 inches. If the foil width is 8 inches, the length should be 193.75.
  13. You can also test up to your own desired length / area format.
  14. Report as No. of Pin Holes per Square Meter area. Some people also report the Pin Holes as Numbers per Meter of running length.

Download Pinhole Tester Datasheet

Video of Pinhole Tester

Additional information


India, Outside India


FMCG / Food / Beverage (Non-Pharma), Pharmaceutical

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