Manufacture Large Batch Hand Sanitizer

Hi good day! Does anyone here have any manufacturing facility that makes hand sanitizer with a batch of 5000 L and up? What mixer do you use to dissolve carbopol 940 in such a batch of 5000L? Any tips on what kind of mixer to use in dispersing carbomer for hand sanitizer?


  • PerryPerry Administrator, Professional Chemist
    When we made carbomer gels (for hair gel) we had a tank dedicated to just blending carbomer in water. In the lab, we would make a 1% carbomer solution which we let mix all day for use later.  (Also put in some preservative)
  • nielrobertlimnielrobertlim Member
    edited April 2020
    @Perry What kind of mixing head did you use for mixing carbomer?

  • PerryPerry Administrator, Professional Chemist
    Something like this.  That was for mixing 1 gallon of a 1% carbomer solution.
  • @Perry The one you sent is for lab scale. How about the mixing head for large batch of around 5000 L? What mixing head do you use?
  • em88em88 Member
    An easy way to disperse carbomer is with a homogenizer. Silverson is one of the best manufacturers. 
    You can disperse the carbomer even with an overhead stirrer with the right paddle. 
  • chemicalmattchemicalmatt Member, Professional Chemist
    Use a Cowles head on a standard gear-drive Lightnin' type mixer or turbine mixer with 400 - 600 rpm speed. Slower speed works too just takes longer than 90 minutes. Best bet of all is to use an eductor (uses Bernoulli effect to induct carbomer into water stream) and Silverson makes a fine one of those too. If you can use Ultrez 21 instead, then you don't need all that shear, just a standard impellor blade, no more. Good luck getting hold of any these days!
  • DavidWDavidW Member, PCF student
    Contact Silverson and pick their brains.  Other brand high shear mixing is good too.

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