This has been in the back of my mind for awhile, but it finally came to the front the other day when I was watching a video and the person added an entire pint jar of FO to their batter. Now it was a large batch of soap and the person is a responsible soap maker so I have no doubt that the amount was appropriate, it was just the visual of such a large amount of liquid (I've only started making five pound batches) being added and how we don't [seemingly] account for it other than the total batch weight so it fits in our mold.
I generally use FOs at a rate of 1 oz per pound of oil.*** And after running my recipe through a Soap Calculator to make sure I am using the proper amount of Sodium Hydroxide and carefully weighing my Lye Solution and Oils, Butters, etc, I then turn around and basically just dump in an extra ounce of liquid without a second thought (other than discoloration, acceleration, ricing).
So how do we account for this extra liquid or is it just something that we are forced to ignore because there is no way to truly account for it?
*** - Even though I think the IFRA is a bit of a racket, I still check 'usage rates' because at the end of the day I am a responsible person and don't want to make an unsafe product.
I generally use FOs at a rate of 1 oz per pound of oil.*** And after running my recipe through a Soap Calculator to make sure I am using the proper amount of Sodium Hydroxide and carefully weighing my Lye Solution and Oils, Butters, etc, I then turn around and basically just dump in an extra ounce of liquid without a second thought (other than discoloration, acceleration, ricing).
So how do we account for this extra liquid or is it just something that we are forced to ignore because there is no way to truly account for it?
*** - Even though I think the IFRA is a bit of a racket, I still check 'usage rates' because at the end of the day I am a responsible person and don't want to make an unsafe product.