宜昌製藥廠高效過濾（lǜ）器（qì）

關於高效過濾器（qì）的更（gèng）換周期方麵（miàn）的問題，很（hěn）多潔淨室用戶都很關心（xīn），畢竟高效過濾器（qì）決定著潔淨室的潔淨度能否達到（dào）標準（zhǔn），就在前方草莓秋葵菠萝蜜黄瓜榴莲视频也整理（lǐ）過相（xiàng）關方麵的問題：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）效過（guò）濾器（HEPA）用於生（shēng）產空間（jiān）空（kōng）氣的處理和過濾的終端過（guò）濾（lǜ）器。無菌生產要求強製使用高效過濾器，而固體（tǐ）和（hé）半固體（tǐ）劑型的生產有時也會使用。H13至H14（DIN1822）是高效過濾器的兩種，後者截留率（lǜ）為99.995%。但多（duō）久必須更換一次呢？

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.

製藥廠高效過濾器一般多久更換？

草莓秋葵菠萝蜜黄瓜榴莲视频經常看到在公司內部文件中，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（zhōng）並沒有（yǒu）高（gāo）效過濾器可（kě）以使用期限（xiàn）的具體數值。根據GMP的要（yào）求，過濾器不得有泄漏，這需要通過確認（rèn）和定期執行ISO14644-3中的泄漏（lòu）測試，無菌車間來說（shuō）這是必須的。根據附錄1（PIC/S PI032-2）的技（jì）術詮釋，A/B級每6個月進行泄漏測（cè）試，C/D級則為12個月。FDA無（wú）菌指南要求（qiú）進行定期檢查。附（fù）錄（lù）1的要求在這裏也適用（yòng）。泄漏是（shì）可（kě）以（yǐ）修補的，但修補的麵積不能超過單（dān）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，廣州靈潔淨化高（gāo）效（xiào）過濾器並不隻有完（wán）整性一件事情。過濾器（層）的負（fù）載（zǎi）以及上下遊壓差也很重要。如果過濾（lǜ）器上下遊壓差升高，則送（sòng）排風係統的能量需求會增加（jiā），這樣才能維持必（bì）須的換氣（qì）次數。這樣（yàng）的過濾器上下遊壓差可能會（huì）增加（jiā）通風係統的性能限製。為了保護高效過濾器，就要使用前端過濾器---通常是（shì）像F7和F9過濾器（EN779）這樣的精細過濾器。這些過濾器必須定期更換以保護（hù）高效過（guò）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（cóng）實踐角度來看，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（yǒu）在上下遊（yóu）壓差達到一定數值影響到通風係統的性能，或者是能量需（xū）求超過過濾器更換成本時，過濾器（qì）更（gèng）換（huàn）才有意義。但是，過濾器必須能（néng）通過泄漏測試（如上所（suǒ）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（guī）規定這樣的值，這都隻是根據經驗得來的。

靈潔（jié）高效過濾器更換問（wèn）題

谘詢內容：老師您好，小容量注射劑車間空調係統的高效過濾（lǜ）器必須定期更（gèng）換嗎？如不定期更換，隻在空調驗證時更換風量不合格房間高效和撿漏不合格高效可以嗎？

CFDA審（shěn）核（hé）查驗中（zhōng）心回複：你好，更換高（gāo）效過濾器根據空調驗證參考：時風量和撿漏是（shì）必須的，但同時也應（yīng）製定出具體高效過濾器最長使用周期，故（gù）還（hái）是應該有定期的概念。同時必須定期進行（háng）過（guò）濾器完整性測試。

製藥（yào）廠高效過濾器（qì）一般多久更換？

潔淨區（qū）A級高效過濾器檢漏

谘詢（xún）內容：潔淨（jìng）區A級高效過濾器檢漏是否可以使用 塵埃粒子計數（shù）器 掃描檢（jiǎn）漏，如果可（kě）以，那麽判斷無（wú）泄漏（lòu）的標準是多少。

CFDA審核查驗（yàn）中心回複：靈潔高效過濾器檢漏一般在非關鍵（jiàn）區域可以使用（yòng）塵埃粒子計數器（qì），但A級潔淨區高（gāo）效過濾器（qì）不推薦使用塵埃粒子計數器掃描檢漏