|
| Dialysis Units (n = 30) | ||
| No | To some extent | Yes | |
| The concentration of the chemical washing solution 30% (60 g chlorine per cubic meter of treated water) and free of impurities. | - | - | 30 (100%) |
| The chemical washing time per month is not less than four hours | - | - | 30 (100%) |
| The sample is free of chlorine in a chemical reagent after chemical washing for the 1st test | - | 7 (23.3%) | 23 (76.7%) |