Security Level 1 - For all written documents that should be made illegible / Strip width ≤ 12 mm / Strip length ∞

Security Level 2 -  For internal documents that should be made illegible / Strip width ≤ 6 mm / Strip length ∞, or Strip area ≤ 800 mm²

Security Level 3 -  For confidential documents that should be made illegible / Particle width ≤4 mm / Particle length ≤ 80 mm, or Particle area ≤320 mm²

Security Level 4 - For documents that contain secrets that should be made illegible / Particle width ≤2 mm / Particle length ≤ 15 mm, or Particle area ≤30 mm²

Security Level 5 -  For extremely high security needs / Particle width ≤ 0,8 mm / Particle length ≤ 13 mm, or Particle area ≤10 mm²

Security Level 6 - Not listed under DIN 32 757 – for maximum security requirements / Particle width ≤ 1 mm / Particle length ≤ 5 mm, or Particle area ≤5 mm²