Standards
| DIN standards & VDI guidelines | Database Nautos |
| VDE guidelines | Standards library of the VDE |
| IEEE Standards | database IEEE |
Regulations of the German Association for Water, Wastewater and Waste (DWA) can be found in their database after a one-time registration.
Older DIN standards on the BauInfo-PC
Further older DIN standards can be viewed on the BauInfo-PC at the Kurt-Schumacher-Ring site.