深圳製藥廠高效過濾器

關於高效過濾器（qì）的更換周期方麵的（de）問題，很多潔淨室用戶都很關心，畢竟高效過濾器決定著潔淨室的潔淨度能否達到標準，就在前方草莓秋葵菠萝蜜黄瓜榴莲视频也整理過相關方（fāng）麵的問題：高效過濾器的更換標準

In the pharmaceutical industry, HEPA filters are used as terminal filters for the processing or filtration of air in production spaces. They are mandatory in sterile production, although they are sometimes also used in the manufacture of solid or semisolid dosage forms. Amongst the HEPA or high-efficiency particulate air filters are Filter Classes H13 to H14 (DIN 1822), the latter with a retention rate of 99.995%. But how often do they need to be changed?

在製藥行業，高（gāo）效（xiào）過濾器（HEPA）用於生產（chǎn）空間空氣的處（chù）理和過濾的終端（duān）過濾器。無菌（jun1）生產要求強製使用高效過濾器（qì），而固體和半（bàn）固體劑型的生產有時也會使用。H13至H14（DIN1822）是高（gāo）效過濾器的兩種，後者截留率為99.995%。但多久必須更（gèng）換一次呢？

One can frequently find internal company guidelines according to which the filters should be changed annually, regardless of monitoring results. Is that sensible? An exact number, meaning the maximum duration of use for HEPA filters in months, cannot be found in the relevant GMP guidelines. According to GMP, the filter has to be free of leaks. This is verified by qualification and regularly performed leak tests as per ISO 14644-3, which are mandatory for sterile facilities. According to the technical 參考：（www.ljinghua.com）interpretation of the Annex 1 (PIC/S PI 032-2), leak tests are to be performed every six months in A/B zones and every twelve months in C/D zones. The FDA Aseptic Guide demands a regular inspection. The requirements of Annex 1 can be applied here as well. Leaks may be repaired; those repaired areas may only take up 0.5% of the filter surface per filter.

製藥（yào）廠高效過（guò）濾（lǜ）器一般多久更（gèng）換？

草莓秋葵菠萝蜜黄瓜榴莲视频經常看到（dào）在公司內部文件中，要求（qiú）每年更換過濾器，而不管檢測結果如何。這是否合理？在相關的GMP指南中並沒有高效過濾器可（kě）以使用期限的具體數值。根（gēn）據GMP的要求，過濾（lǜ）器不得有泄漏，這需要通過（guò）確認和定期執行ISO14644-3中的泄（xiè）漏測試，無菌車（chē）間來說這是必須的。根據附錄1（PIC/S PI032-2）的技術詮（quán）釋，A/B級每6個（gè）月進行（háng）泄漏測試，C/D級則為12個月。FDA無菌指南要求進行定（dìng）期檢（jiǎn）查。附錄1的要求在這裏也適用。泄漏是可以修補的，但修補的麵（miàn）積不能超過（guò）單個過濾器麵積的（de）0.5%。）

However, not only the integrity of the HEPA filter is relevant. The load of the filter (layer) and thus the pressure drop at the filter is also important. If the pressure drop at the filter rises, the energy demand of the ventilation system increases to maintain the necessary air change rates. This pressure drop at the filter can increase to the performance limits of the ventilation system. To protect the HEPA filters, preliminary filters are used - usually fine particulate air filters like F7 und F9 filters (EN779). Those have to be replaced regularly and protect the HEPA filters from clogging.

當然，廣州靈（líng）潔淨化高效過濾器並不隻有完整性（xìng）一件事情（qíng）。過濾（lǜ）器（層）的負載（zǎi）以及上下遊壓差也很重要。如果過濾器上（shàng）下（xià）遊壓差升高，則送排（pái）風係統（tǒng）的能量需求會增加，這樣才能維持必須的換氣次（cì）數。這樣的過濾器上下遊壓差可能會增加通（tōng）風係統的性能限（xiàn）製。為了保護高效過濾器，就要使用前端過濾器---通常是像F7和F9過濾器（EN779）這樣的精細過濾器。這些過濾器必須（xū）定期更換以保護高效過濾器避免堵塞

From a practical viewpoint, one could say that the maximum duration of use depends directly on the pressure drop. Changing the filters only makes sense if the pressure drop gets too high for the performance of the ventilation system or if the cost of energy demand lies above the cost of a filter change. The filters do have to pass the leak tests (see above), of course. In practice, several companies do not use a filter for more than eight years. As mentioned before, though, this is not a legally binding value, but merely based on experience.

從實踐（jiàn）角度來看，草莓秋葵菠萝蜜黄瓜榴莲视频可以說最長使用期限直接取決於上下遊壓差。隻有在上下遊壓差達到一定數值影（yǐng）響到通（tōng）風係統的性（xìng）能，或者是能量需求超過過濾器更（gèng）換成本時，過濾器更換才有意義。但是，過濾器必須（xū）能（néng）通過泄漏測試（如上所述）。事實上，很多公司並不會使用一個過濾器超過8年。正如前述，並沒有法規規定這樣的值（zhí），這都隻是根據經驗得來的。

靈潔高效過濾器更換問題

谘詢內容：老（lǎo）師您好，小容量注射劑車（chē）間空調係統的高效過濾器必須定期更換嗎？如不（bú）定期更換，隻在空調驗證時（shí）更換風量不合格房間高效和撿（jiǎn）漏不合格（gé）高效可以嗎？

CFDA審核查驗中心回複：你好，更換高效過濾器根據空（kōng）調驗證參（cān）考：時（shí）風量和撿漏是必須的，但同時也應製定（dìng）出具體高（gāo）效過濾（lǜ）器最長使用周期，故還是應該有定期的概念。同時必須定期進行過（guò）濾器完整（zhěng）性測試。

製藥廠高效過濾器一般多久更換？

潔淨區A級高效過濾器檢漏

谘詢內（nèi）容：潔淨區A級高效過（guò）濾器檢漏是（shì）否可（kě）以（yǐ）使（shǐ）用 塵埃粒子計數器 掃描檢漏，如果可以，那麽判（pàn）斷無泄漏的（de）標準是多少。

CFDA審核查（chá）驗中心回複：靈潔高效過濾器檢漏一般在（zài）非關鍵區域可以使用塵埃粒子計數器，但A級（jí）潔淨區高效過濾器不推薦使用塵埃（āi）粒（lì）子計數器掃描檢漏