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发表于 2013-5-25 15:19:34
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本帖最后由 1009889281 于 2013-5-25 15:23 编辑
请参考PIC/S对欧盟GMP附件一的解释。
Section 120:
New text: Vial capping can be undertaken as an aseptic process using sterilized caps or as a clean process outside the aseptic core. Where this latter approach is adopted, vials should be protected by grade A conditions up to the point of leaving the aseptic processing area, and thereafter stoppered vials should be protected with a grade A air supply until the cap has been crimped.
Interpretation: For lyophilized products: product transfer from filling machine to freeze dryer should be done under grade A conditions (e.g. laminar air flow mobile unit) with grade B surroundings. Transfer to the crimp-capping machine should be done under grade A air supply. For liquid products and powders: transfer from the aseptic processing area to the crimp capping machine should be done under grade A air supply. For all products: Crimp capping should be done under grade A air supply. Sterilization of crimp caps is only mandatory, when crimp capping is performed in the aseptic core.
The new revision of Annex 1 mentions a new term, Grade A air supply, but no definition of this new term is given in the revised Annex. Inspectors and Industry therefore need an interpretation of this term, especially as a provision of a grade A air supply is one of the most significant changes in Annex 1.
The term grade A air supply is specifically used to describe a supply of air which is HEPA filtered, and at the point of supply meets when tested, the non-viable particulate requirements of a grade A area, as defined in paragraph 4 of the revised Annex 1. It is important to differentiate between the terms grade A air supply and grade A area. A grade A air supply should be qualified and monitored as follows:
Qualification requirements:
• Qualification is done only under at rest conditions: For the crimp-capping machine the at-rest state is achieved when the air supply is switched on, the crimp-capping machine is operating (feeding of vials and crimp caps is not considered necessary) and there is no interference by operators. For the conveyor tunnel for liquid products the at-rest state is achieved when the air supply is switched on, the conveyor belt is switched on and there is no interference by operators.
• Non-viable particles should be measured and are expected to meet grade A requirements. The probe should be located at the point of supply of the filtered air.
• Smoke studies should be performed. Whilst unidirectional air flow is not required, efficient protection of the vials should be demonstrated and the
absence of air entrainment from the surrounding room should be demonstrated.
• Limits for air velocity should be in place and justified.
Monitoring requirements:
• Monitoring requirements for non-viable particles and microbiological contamination should be defined by the company following a risk assessment.
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