烏魯木齊製藥廠高效過濾器

關於高效過濾器的更換（huàn）周期方麵的問題，很多（duō）潔淨室用戶都很（hěn）關心，畢竟高效過濾（lǜ）器決定著潔（jié）淨室的潔淨度能（néng）否達到標準，就在前（qián）方草莓秋葵菠萝蜜黄瓜榴莲视频也整理過（guò）相關方麵的問題：高效過濾器的更換標（biāo）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，高效過濾器（HEPA）用於生產空間空氣的處理（lǐ）和過濾的終端過濾器。無（wú）菌生產要求強製使用高效過濾器，而固體和半固體劑型的生產有時也會（huì）使用。H13至H14（DIN1822）是高效過濾器（qì）的兩種（zhǒng），後者截（jié）留率為99.995%。但多久必（bì）須更換一次呢（ne）？

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（zhì）藥廠高（gāo）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（zài）公司內部文件中，要（yào）求每年（nián）更換過濾器，而（ér）不管檢測結（jié）果如何。這（zhè）是（shì）否合理？在相關的GMP指南中並沒（méi）有高效過濾器可（kě）以使用期限的具體數值。根據GMP的要求，過濾器不得有泄漏，這需要通過確認和定期執（zhí）行ISO14644-3中（zhōng）的泄漏測試，無菌車間來說（shuō）這是必須的。根據附錄1（PIC/S PI032-2）的技術詮釋，A/B級每6個月進行泄漏測試，C/D級則為12個月。FDA無菌指南要求進（jìn）行定期檢查。附錄1的要（yào）求在這裏也適用。泄漏（lòu）是可以修補的，但修補的麵積不（bú）能超過單個（gè）過濾器麵（miàn）積的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，廣州靈潔淨化高效過濾器並不隻有完整性一件事情。過濾器（層）的負載以（yǐ）及上（shàng）下遊壓差也很重要。如（rú）果過濾器上下遊壓差升高，則（zé）送排風係統的能量需求會增加，這（zhè）樣才能維持必須的（de）換氣次數。這樣的過濾器上下遊壓（yā）差可能（néng）會增加通（tōng）風係（xì）統的性能限製。為了保護高效過濾（lǜ）器，就要使用前端過（guò）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高效過濾器避免（miǎn）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（shí）踐角（jiǎo）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（chà）。隻有在上下遊壓差達到一（yī）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（chéng）本時，過濾器更換才有意義（yì）。但是（shì），過濾器必須能通（tōng）過泄漏測試（如上所述）。事實上，很多公司並不會（huì）使用一個過濾（lǜ）器超（chāo）過8年。正如前述，並沒有法規規定這樣的值，這都隻是根據經驗得來的。

靈潔高效過濾器更換（huàn）問題

谘詢內容：老師您好，小容量注射（shè）劑車間空（kōng）調（diào）係統的高效過濾器（qì）必須定（dìng）期更換嗎（ma）？如不定期更換，隻（zhī）在空調驗證時更換風量不合格房間高效和撿漏（lòu）不合格高效可以嗎？

CFDA審核查驗中心回複：你好，更換高效過濾器根據空調驗證參考：時風量和撿漏是必須的（de），但同時也應製定出具體高效過濾器最長使用周期，故還是應該有定期的概念。同時必須定期進行（háng）過（guò）濾器完整性測試。

製藥廠高（gāo）效過濾器一般（bān）多久更換？

潔淨區A級高效過濾器檢漏

谘詢內容：潔淨區A級高效（xiào）過濾器檢漏是（shì）否（fǒu）可（kě）以（yǐ）使用 塵埃粒子計數器 掃（sǎo）描檢漏，如果可以，那麽判（pàn）斷無泄漏的標準是多（duō）少。

CFDA審核查驗中心（xīn）回複：靈潔高效過濾器檢漏一般在非關鍵區（qū）域可以使用塵埃粒子計數器（qì），但A級潔淨區高效過濾器不（bú）推薦使用塵埃粒子計數器掃（sǎo）描檢漏