Home Cosmetic Science Talk Formulating Microbial testing of Surfactant

  • Microbial testing of Surfactant

    Posted by vjay on July 28, 2014 at 8:20 am

    Hi all 

    Generally surfactant contain 30 % to 50 % active matter and remaining water or other impurities.
    I am thinking if surfactant contain water 50 to 70 % water so microbial testing is require or not ?
    I checked generally surfactants specification does not contain microbial limit or testing.
    I want to know that why 30 to 50 % surfactant does not contaminate or microbial testing not require.
    The_Microbiologist replied 9 years, 11 months ago 2 Members · 1 Reply
  • 1 Reply
  • The_Microbiologist

    July 28, 2014 at 9:13 am

    Hi Vjay,

    If a surfactant contains 50-70% water it should be tested for bacteria/fungi.  If it contains 30-50% water it is less likely to be contaminated, but if it were my cosmetic line, I would still want it tested. 

    Many companies add preservatives to their surfactant blends.

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