Blekingsproces
| Proces | Afkorting | Stoffen |
| Elemental Chlorine | EC | chloor (Cl2) |
| Elemental Chlorine-free | ECF | chloorbleekloog of hypochloriet (ClO-) en chloordioxide (CLO2) |
| Enhanced Elemental Chlorine-free | EECF | reductie lignine + chloordioxide (CLO2) |
| Processed Chlorine-free | PCF ook SCF | |
| Secondarily Chlorine-free | SCF ook PCF | |
| Totally Chlorine-free | TCF | zuurstof (O2), waterstofperoxide (H2O2) en ozon (O3) |