Aseptic Processing
apps.who.int/prequal/.../pq_pres/.../2-1_2-2_AsepticProcessing.ppt‎
Certain pharmaceutical products must be sterile ... To review specific issues relating to the manufacture of aseptically prepared products: ... integrity/validation; Equipment/container preparation and sterilization; Filling Process; Validation ... patterns; ***Clean up time/recovery***; Temperature and relative humidity; Airflow velocity.

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Annex 6 WHO good manufacturing practices for sterile ...
www.who.int/.../medicines/.../GMPSterilePharmaceuticalProdu...‎
4.3 For the manufacture of sterile pharmaceutical preparations, four grades of clean .... ***“clean-up” or “recovery”*** period of about 15–20 minutes (guidance value), ... 4.7.8 Other characteristics such as temperature and relative humidity depend on ..... 6.4 Both temperature and pressure should be used to monitor the process.