Process Water For ETO Sterilization Equipment
The humidification water used in the ETO Sterilization Equipment should be free from contaminants, should not weaken the ETO sterilization process, and should not damage the sterilizer, sterilized products, or the load. Humidification should be done by injecting steam, not by directly injecting atomized water.
Note: It is recommended to use purified water that meets the requirements of the Chinese Pharmacopoeia for humidification. If purified water is not used, the steam supply or steam condensate should be validated to ensure that the humidification steam meets the requirements of this section. The steam quality testing methods are outlined in YY/T 1612 and the Chinese Pharmacopoeia.
Steam Contaminant Limits
| Contaminant | Condensate | Steam Supply |
|---|---|---|
| Residue | Less than 10mg/kg | Less than 100mg/L |
| Heavy Metals | Not exceeding the limits for purified water in the Chinese Pharmacopoeia | Not exceeding the limits for purified water in the Chinese Pharmacopoeia |
| Chlorides | Less than 1mg/kg | Less than 10mg/L |
| Conductivity | Less than 15?S/cm | Less than 50?S/cm |
| pH | 5–8.5 | 5–8.5 |
| Appearance | Colorless | Colorless |
Note 1: If the contaminant levels in the feedwater or steam exceed the above limits, the sterilizer’s service life will be significantly reduced.
Process Air For Sterilization
The air used in the sterilizer should be dried and filtered to ensure the service life and filtering performance of the ETO Sterilization sterilizer’s terminal filter.
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