| 1 | Use the material agent: alkali or neutral detergent. | |
| 2 | Applicable to weak base, weak acid, oli, especially resistant to abrasive medium. | |
| 3 | When the resin is exhausted, exchange capacity can be regenerated with weak alkali-ammonia solution. | |
| 4 | Because of the strong base giving mesh point is missing, the de-rubber photoptic film . | |
| 5 | Systematic review: role of acid, weakly acidic and weakly alkaline reflux in gastro-oesophageal reflux disease. |