Home Cosmetic Science Talk Formulating Advanced Questions At home bacterial growth test

  • At home bacterial growth test

    Posted by SpicyKimchi on March 24, 2017 at 4:26 pm

    I’m trying to be able to see if any bacteria grows in a solution I’m mixing of my additive powders mixed with isopropyl alcohol to dillute it before Incorporating it into my pigment before pressing. 

    I have them in little bags to see how the diluting would look so I can figure out if one of my ingredients is not soliable. 

    Any things I can do outside of sending it to a lab to test bacterial growth? 

    SpicyKimchi replied 7 years, 8 months ago 4 Members · 5 Replies
  • 5 Replies
  • SpicyKimchi

    Member
    March 30, 2017 at 7:54 am

    Bump

  • johnb

    Member
    March 30, 2017 at 8:05 am

    There is zero possibility of microorganism growth in IPA solutions above 10% concentration or in the absence of water.

  • OldPerry

    Member
    March 30, 2017 at 1:10 pm
  • David

    Member
    March 31, 2017 at 12:18 pm

    There is a difference between monitoring bacterial growth (by adding bacteria) and testing whether there is any bacteria already in the product.
    For the first option you’ll need a micro lab, for the second you’ll just need what @Perry suggested.

  • SpicyKimchi

    Member
    April 5, 2017 at 2:50 am

    Thank you everyone!

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