Home Cosmetic Science Talk Formulating General filtering particles in the bulk produced product

  • filtering particles in the bulk produced product

    Posted by Joejoe on November 8, 2023 at 9:49 pm


    After the bulk production, we found some particles carried over from the previous production. We want to filter out. Is there any recommended filter for filtering non waterish products? Thanks



    PhilGeis replied 7 months, 1 week ago 4 Members · 3 Replies
  • 3 Replies
  • chemicalmatt

    November 9, 2023 at 8:29 am

    @Joejoe there are many filtering tools you can purchase and apply here. For viscous products (“non watery”?) the standard 316SS canister filter with 100 - 200micron SS frit should do. The polyester insert may be needed depending on the schmutz involved. For a cheap hack (again I should be charging money for this) assuming you are using 2.0″ Tygon hose or SS pipe with standard sanitary couplings attached, then purchase a 2.0 inch Buna N gasket having a 10 - 30 mesh SS frit, then get organza fabric from the fabric store, which is nylon and chemically inert. Stretch a piece of organza across the frit on the input side of the frit then clamp into place securely. Depending on the organza you can filter out 1 - 5micron particles. Pump slowly to avoid too much back pressure and check/clear the fabric overlay frequently during transfer.

  • Microformulation

    November 9, 2023 at 8:36 am

    The standard response would advise discarding the batch. I once had a client who attempted this before seeking our help and ended up having to recall the entire product.

    A more crucial aspect to consider is the sanitation of your equipment before manufacturing. I recommend taking a closer look at this process within your facility.

  • PhilGeis

    November 9, 2023 at 8:40 am

    Amen Microformulation!! Recall an instance when poor process design had the preservative precipitate - filtration of “particles” left it unpreserved with predictably contaminated.

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