Film (F) - DIN Standard 66399
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DIN 66399 is now referenced as ISO/IEC 21964
DIN 66399 Material Classification F refers to information in miniaturized form, for example microfilms. The Security Levels run from F-1 to F-7 with F-1 being recommended for data carriers with general data which have to made illegible, to F-7 for data carriers with top secret data where the strictest security standards must be maintained.
F1
- Recommended, for example, for data carriers holding general data to be rendered illegible
- Max. material particle size 160 mm²
- Shredded data can be reproduced without special knowledge or equipment, although the process is time-consuming
F2
- Recommended, for example, for data carriers holding general data to be rendered illegible
- material particle size 30 mm²
- Shredded data can be reproduced with equipment, although the process is time-consuming
F3
- Recommended, for example, for data carriers holding sensitive, confidential and personal data
- Max. material particle size 10 mm²
- Shredded data can only be reproduced with maximum effort and special equipment
F4
- Recommended, for example, for data carriers holding particularly sensitive, confidential and personal data
- Max. material particle size 2.5 mm²
- Shredded data can only be reproduced utilizing equipment that is not readily available commercially
F5
- Recommended, for example, for data carriers holding confidential information
- Max. material particle size 1 mm²
- Shredded data is unlikely to be reproduced even with special equipment
F6
- Recommended, for example, for data carriers holding confidential information demanding an exceptionally high level of security
- Max. material particle size 0.5 mm²
- Shredded data cannot be reproduced even with special equipment
F7
- Recommended, for example, for data carriers holding strictly confidential information demanding the highest security precautions (e.g. classified and top secret)
- Max. material particle size 0.2 mm²
- Shredded data cannot be reproduced in any way with the current state of science and art