With the growing awareness of health hazards from naturally occurring radon, and with greater importance being given to detecting radiation in medical, industrial and research environments, experts increasingly are turning to solid state nuclear track detectors (SSNTDs) to determine neutron doses and measure radon concentration.

The most critical component of an SSNTD is the substrate material, and the most definitive SSNTD substrate material is CR-39® material from PPG Performance Sheet Solutions.

Innovative Technology

A particle coming into contact with a detector made from CR-39 material damages the material as it passes through and leaves a permanent trail, known as a track. Tracks can be observed and counted using a microscope once the detector is removed from the device and exposed to a caustic solution to enlarge the conical pits left by particles. This safe and simple process is known as etching.


  • Radon detection

  • Autoradiography

  • Cosmic radiation

  • Basic and applied research

  • Neutron dosimetry

  • Positron emission tomography

  • Dosimetry products

  • Academic and industrial studies

Standard Availability


[Tolerances: ± 0.1 mm]

Custom sizes up to 620 mm


[Tolerances: ± 5% of nominal value]

0.7 mm; 1.0 mm; 1.5 mm

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