Choose a shredder according to the appriopriation...
Personal and desk-side shredders: for office and house usage, shred up to 300 pages per day | |
Office shredders: designed for usage by a group of office-workers in medium-sized and big offices, shred up to 2000 A4 pages per day | |
Computer printout shredders: designed for continuous operation, shred more than 2000 pages per day or computer printout | |
High-capacity shredders: designed for the archives or as a main shredders in big companies, shred up to few hundreds pages at one time |
According to the cutting type...
 |  | strip: lower price, shred more pages at one time |  |  | cross-cut: ensures higher security level and minimizes shreds volume |
...and according to the security level
1st security level 2nd security level 3rd security level 4th security level 5th security level 6th security level
DIN 32 757
General documents nad correspondence: strip shredding max 12mm 
DIN 32 757
Inner documents and correspondence: strip shredding max 6mm 
DIN 32 757
Confidential documents: strip shredding max 2mm and cross-cut shredding max 4x80mm 
DIN 32 757
Secret documents: cross-cut shredding max 2x15mm 
DIN 32 757
Top-secret documents: cross-cut shredding max 0,8x13mm 
The highest security level
New standard for governmental Office In the USA: cross-cut shredding max 1x5mm
