DOT Classification Tests

Tests for Class 1 (Explosives)

Test Series 1: Is the substance a potential candidate for Class 1?

  • Gap Test (Zero Gap)
  • Koenen
  • Internal Ignition (10 gram bag)
  • Time Pressure

Test Series 2: Can the substance be excluded from Class 1?

  • Gap Test (50 mm Gap)
  • Koenen
  • Internal Ignition (20 gram bag)
  • Time Pressure

Test Series 3: Is the material a forbidden substance?

  • Impact sensitivity
  • Friction sensitivity
  • Thermal stability
  • Small-scale burn

Test Series 4: Is the article a forbidden article?

  • Thermal stability
  • 12 meter drop

Test Series 5: Is the substance a candidate for 1.5?

  • #8 Cap
  • Deflagration to Detonation Transition (DDT)
  • External Fire

Test Series 6: Is the substance or article a Class 1.1, 1.2, 1.3, or 1.4?

  • Single package
  • Stack test
  • External Fire

Tests for Class 4 (Flammable Solids)

Class 4.1: Is the substance or article a flammable solid and self-reactive substance?

  • Screening test
  • Burning rate
  • Tests for self-reactive substances

Class 4.2: Is the substance or article a spontaneously combustible material?

  • Self heating substances test

Class 4.3: Is the substance or article a Dangerous When Wet material?

  • Hazardous When Wet tests

Tests for Class 5 (Oxidizing Materials)

Class 5.1: Is the substance or article an oxidizing solid or liquid?

  • Tests of oxidizing solids and liquids

Class 5.2: Is the substance or article an oxidizing peroxide (5.2)?

  • Tests for organic peroxides