麗水製藥廠高效過濾器

關於高效過濾器的（de）更換周（zhōu）期方麵的問題，很多潔淨室用戶都很關心，畢（bì）竟高（gāo）效過濾器決定著潔淨室的潔淨度能否達（dá）到標準，就在（zài）前方（fāng）草莓秋葵菠萝蜜黄瓜榴莲视频也整理過相關方麵的（de）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，高效過濾器（HEPA）用於生產空間空（kōng）氣的處理（lǐ）和過濾的終端過濾器。無菌生（shēng）產要求強製使用高效（xiào）過濾器，而固（gù）體和半（bàn）固體劑型的生產有時也會使用。H13至H14（DIN1822）是（shì）高效過濾器的兩種，後（hòu）者截留率為99.995%。但多久必須更換一次呢？

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（zhì）藥（yào）廠高效過濾器（qì）一般多久更換？

草莓秋葵菠萝蜜黄瓜榴莲视频經常看到（dào）在（zài）公司內部文件中，要求每年更換過濾器（qì），而不管檢測（cè）結果（guǒ）如何。這是否合理？在相關的GMP指南中並沒有高效過濾器可以使用期限的具體數（shù）值。根據GMP的要求，過濾器不得有泄漏，這需要通過確認和定（dìng）期執行ISO14644-3中（zhōng）的泄漏測（cè）試，無菌車間來說這是必須的。根（gēn）據附錄1（PIC/S PI032-2）的技術詮釋，A/B級每6個月進行泄（xiè）漏測試，C/D級則為（wéi）12個月。FDA無菌（jun1）指南要求進行定期檢查。附錄1的（de）要（yào）求在這裏也適用。泄漏是（shì）可以（yǐ）修補（bǔ）的，但修補的麵積不能超過單個過濾器麵積的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（gāo）效過濾器（qì）並不隻有完整性一件事情。過濾器（層）的（de）負載以及上下遊壓差也很重要。如果過濾器上下遊壓差升高，則送排風係統的能量需求會增加，這樣才能維（wéi）持（chí）必須的換氣（qì）次數。這樣的過（guò）濾（lǜ）器上下遊壓差可（kě）能會增加通風係（xì）統的性（xìng）能（néng）限製。為了保護高效過濾器，就要使用前端過濾器（qì）---通常是像F7和F9過濾器（EN779）這樣的（de）精細過（guò）濾器。這些過（guò）濾（lǜ）器必須定期更換以保（bǎo）護高效過濾（lǜ）器避免堵塞（sāi）

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.

從實踐角度來看，草莓秋葵菠萝蜜黄瓜榴莲视频可以說最長使用（yòng）期限直接取決於上（shàng）下遊壓（yā）差。隻有在上下遊（yóu）壓差達到一定數值影響到通（tōng）風係統（tǒng）的性能，或者是能（néng）量需求超過過濾器更換成本時，過濾器更換才有意義。但是，過濾器（qì）必須能通過泄漏測試（shì）（如上（shàng）所述）。事實上，很多（duō）公司並不會使用一個過濾器超過8年。正如前述，並沒有法（fǎ）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：老師您好，小容量注射（shè）劑車間空調係統的高效過濾器必須定期更換嗎？如不定期更換，隻在空調驗證時更換風（fēng）量不（bú）合格房間高（gāo）效和撿漏不合格高效可以（yǐ）嗎？

CFDA審核查驗中（zhōng）心回（huí）複：你好，更換（huàn）高效過濾器（qì）根據空調驗證參考：時風量和撿漏是必須的，但同時也應製定出具體高（gāo）效（xiào）過濾（lǜ）器最（zuì）長使用周期，故（gù）還是（shì）應（yīng）該有定期的概念。同時必須（xū）定期進行過濾器（qì）完整性（xìng）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

谘詢內容：潔（jié）淨（jìng）區A級高效過濾器檢漏是否可（kě）以使用 塵埃粒子計數器 掃描檢（jiǎn）漏，如果可以，那麽判斷無（wú）泄漏的標準是多少。

CFDA審核查驗中心回複：靈潔高效過濾器檢漏一（yī）般在非關鍵區域可以使用塵埃粒子（zǐ）計數器，但A級潔淨區高效過濾器不推薦使用塵埃粒子計數（shù）器（qì）掃（sǎo）描檢漏