This standard specifies requirements relating to components of contamination protection boxes. These boxes are used in hot cells with shieldings made of lead bricks and special components complying with DIN 25407 part 1 and 2.; The components complying with this standard and those complying with DIN 25407 part 1 and 2 are used to build hot cells with sealed interiors and surrounding lead shieldings (Alpha-Gamma-Technique).