Sworder
Member
Another curious and probably stupid query (yea we all have em) How is the oil sterilized (heating) or is it purchased "sterile" or is that absolutely necessary since oil is a reasonably pathetic bacterial medium and a preservative is added which should inhibit further bacterial growth?
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Oil is purchased from your local grocery store. Then mixed with the solvents and then everything is sterilized using a syringe filter or if you are doing large volumes you use a pump which goes through a similar filter.
Some choose to bake the finished product in an oven to sterilize it further, I don't.
Whatman Sterile Syringe Filter .20u - Syringes Needles Filters - Supplies
