SOP on Cleaning of Sampling Aids

SOP on Cleaning of Sampling Aids

  • OBJECTIVE :
  • To lay down a procedure for cleaning of Sampling Aids.
  • RESPONSIBILITY :
  • Officer – Quality Quality Assurance to implement the procedure.
  • Head – Quality Quality Assurance  to ensure compliance.
  • PROCEDURE :
  • Preparation of Detergent solution (2% Extran MA 02 Neutral, solution).
  • To about 980 mL of potable water in plastic beaker add about 20ml of Extran and mix thoroughly.
  • Preparation of 70% Isopropyl alcohol:
  • About 300 mL of purified water add about 700ml of Isopropyl alcohol and mix thoroughly.
  • Procedure for Spoons & Funnels:
  • Scrub the spoons/funnels with a nylon brush using detergent solution, until the visible stains, if any is removed.
  • Thoroughly wash with potable water to remove any residues of detergent.
  • Finally rinse with purified water.
  • Dry the spoons/funnels in hot air oven for about 1 hour and cool to room temperature.
  • After completion of drying, wrap the spoons/funnels in polybags and label as cleaned
  • sampling aids and keep them in respective drawer.
  • Procedure for Large Volume Sampling Thieves.
  • Separate the inner and outer tubes of the sampler.
  • Dry wipe any powder sticking to the tubes with a clean lint free cloth.
  • Wash the inner and outer tubes with potable water to remove any residues.
  • Scrub the outer and inner tubes with about 0.5 ltr. of Detergent solution, using a long handled nylon brush.
  • Remove any residues of powder sticked at the corners of the partitions in the inner tube  using a  nylon brush.
  • Thoroughly wash the inner and outer tubes with ample amount of potable water to remove the detergent residues.
  • Rinse the inner and outer tubes  with about a litre of Purified water.
  • Wipe dry the tubes with clean lint free cloth.
  • Wipe the tubes with 70 % Isopropyl alcohol solution,  and allow to dry
  • preferably in a hot air oven.
  • Inspect visually for any residues, if any residues observed repeat the cleaning.
  • After drying label as cleaned sampling aids and keep them in respective place.
  • Procedure for liquid samplers :
  • Dip the glass apparatus in the cleaning solution. Soak for about 1 hour in cleaning solution and remove from it.
  • Take potable water upto half of the capacity and rinse by inverting and shake several times and discard the solution. Rinse with potable water for four more times.
  • Finally rinse with purified water two times and keep them in tray allowing it to dry.
  • Procedure for Sampling bottles :
  • The sampling bottles and caps shall be soaked in potable water. take them out.
  • Shake for several times by capping the bottles.
  • Rinse the bottles and caps twice with purified water.
  • Dry the cleaned bottles in hot air oven at 105°C for about 1 hour.
  • Mop the caps with 70% IPA solution and allow them to dry keeping separately in a tray.
  • Once cleaning is complete, cap the bottles and place them near the sampling station in the respective container labelled for the purpose.
  • Note :
  • Only unused bottles shall be used for sampling. Once used, the sampling bottles shall not be reused for sampling activity.
  • Only sterilised bottles shall be used for microbiology samples.
  • Micro sampling shall be done prior to any other sampling.
  • Forms and Records (Annexures)
  • Not Applicable
  • Distribution
  • Master copy –  Quality Assurance
  • Controlled copies- Quality Assurance, Production, Quality Control.engineering
  • History
    Date Revision Number Reason for Revision
    00 New SOP

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