SOP for Operating Procedure of Laminar Air Flow : Pharmaceutical Guidelines

SOP for Operating Procedure of Laminar Air Flow

Standard operating procedure for laminar air flow with U.V light.


       To clearly define the operation of the laminar flow.    

2.0  SCOPE

       This procedure is applicable for laminar air flow installed in sterility area of microbiology section.


3.1  Doing      : Tech. Assistant  (Microbiologist)
3.2  Checking : Executive/Manager    


       Head of the Department


5.1  Switch 'ON' the mains.
5.2  Switch ‘OFF’ U.V. light.
5.3  Switch ‘ON’ laminar air flow and light.
5.4  Check and ensure manometer reading “0” mm of water gauge before switching “ON”. Check and ensure the manometer reading between 10 to 15 mm water gauge after switching ‘ON’ the LAF and keep the record of reading.
5.5  In case the manometer reading  is found  out of limit,inform maintenance department for corrective action.
5.6  Clean the LAF bench with 70% IPA before use and after completion of work.
5.7  Switch  ‘ON’ U.V. light after completion of work.
5.8  Switch ‘OFF’ the LAF and light after the completion of work.
5.9  Validate the LAF twice a year by third party for DOP test/smoke Test for air velocity and for non viable particle count.
5.10  Maintain U.V. light burning record.


6.1  LAF= Laminar Air Flow      
6.2  No. = Number       
6.3  U.V= Ultraviolet        
6.4  DOP = Dioctyl Pthalate
6.5  SOP No.= Standard operating procedure no.
6.6  % = Percentage

Ankur Choudhary is India's first professional pharmaceutical blogger, author and founder of Pharmaceutical Guidelines, a widely-read pharmaceutical blog since 2008. Sign-up for the free email updates for your daily dose of pharmaceutical tips.
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