| In force components | 
| Number 
 | Title | Status | 
| K.91 (01/24) 
 | Guidance for assessment, evaluation and monitoring of human exposure to radio frequency electromagnetic fields | In force 
 | 
| 
 | 
| Superseded and Withdrawn components | 
| Number 
 | Title | Status | 
| K.91 (05/12) 
 | Guidance for assessment, evaluation and monitoring of human exposure to radio frequency electromagnetic fields | Superseded 
 | 
| K.91 (07/17) 
 | Guidance for assessment, evaluation and monitoring of human exposure to radio frequency electromagnetic fields | Superseded 
 | 
| K.91 (01/18) 
 | Guidance for assessment, evaluation and monitoring of human exposure to radio frequency electromagnetic fields | Superseded 
 | 
| K.91 (2018) Amendment 1 (09/18) 
 | Appendix IX - Manhole type base station | Superseded 
 | 
| K.91 (2018) Amendment 2 (09/18) 
 | Appendix X - EMF monitoring and information platform | Superseded 
 | 
| K.91 (2018) Amendment 3 (05/19) 
 | New Appendix IX - Manhole type base station | Superseded 
 | 
| K.91 (11/19) 
 | Guidance for assessment, evaluation and monitoring of human exposure to radio frequency electromagnetic fields | Superseded 
 | 
| K.91 (06/20) 
 | Guidance for assessment, evaluation and monitoring of human exposure to radio frequency electromagnetic fields | Superseded 
 | 
| K.91 (12/20) 
 | Guidance for assessment, evaluation and monitoring of human exposure to radio frequency electromagnetic fields | Superseded 
 | 
| K.91 (01/22) 
 | Guidance for assessment, evaluation and monitoring of human exposure to radio frequency electromagnetic fields | Superseded 
 |