| purification system | 2.04 | How to deal with its clogged purification system? | ||
| purification plant | 1.58 | ...a water purification plant. | ||
| purification tablet | 1.25 | Aid organizations have distributed thousands of water purification tablets. | ||
| purification ritual | 0.79 | Koizumi did not undergo traditional Shinto purification rituals at the altar. | ||
| purification equipment | 0.66 | The Red Cross was forced to install water purification equipment itself, for example. | ||
| purification chemical | 0.39 | Forty tons of water purification chemicals and antibiotics to stem the spread of disease were also on the way. | ||
| purification kit | 0.33 | UNICEF sending medical supplies, water purification kits. | ||
| purification rite | 0.33 | Sugimoto offers purification rites and other religious services to the big media companies that surround her. | ||
| purification ceremony | 0.26 | Ono wears a white silk kimono and tall black hat to the purification ceremony. | ||
| purification process | 0.26 | It is used in the purification process for clinical and commercial antibody production. |