This may be a silly question, but when you list the ingredients in order of largest quantity to smallest, where does the water (or liquid) fit in? Basically, how do you know how much has evaporated? I see it listed in the ingredients on many etsy stores, but it's always towards the end of the list.
Putting water in the ingredient list
- Thread starter Healinya
- Start date
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I would say list it in terms of proportions IE the ingredients that are present in the higher proportions go first and so on...
to find out how much has evaporated.... here is what youd do:
Ok so lets say you had a given recipe with
20 oz of water...
this recipe was a 2lb batch (im just shooting off numbers)
and you made 6 bars with it... now you would take that 20 oz and divide by 6... so that gives you 3.33 oz of h2o/bar of soap made.
Now weigh the bar of soap (the day you cut it)...
lets call it 5.2 oz, this is when your water is present at x percent in your soap bar, you would take 3.33 and divide by 5.2 to give you a bar that is 64.03% water.
wait until the cure is done and re-weigh the bars(or half way through ... and then again when done)..
lets say it drops to 5 oz, so that means you lost that extra .2 of an oz of water due to evaporation.
then you take .2 (the amount that has changed..) and divide that by your final bar weight... that gives us 4% of "stuff" evaporated out of your bar of soap.....so that means that each bar is weighs 4 percent less, and thus contains 4% less water, which we can plug into our original equation to extrapolate the volume of water lost..
then set up the equation like this:
take the orgin % of water in the bar, multiplied by x, then the amount of h20 used in the whole batch multiplied by 4%...
.6403(100)=20oz
.04(100)=X
cross-multiply....
.6403(100)X=20oz(.04)(100)
64.03X=80oz
X=.8oz
so that means per bar you lost .8 oz of water....
(check my math... this was kind of like dusting the cobwebs off the math part of my brain... so i make no guarantee on my math... but i think its right!)
to find out how much has evaporated.... here is what youd do:
Ok so lets say you had a given recipe with
20 oz of water...
this recipe was a 2lb batch (im just shooting off numbers)
and you made 6 bars with it... now you would take that 20 oz and divide by 6... so that gives you 3.33 oz of h2o/bar of soap made.
Now weigh the bar of soap (the day you cut it)...
lets call it 5.2 oz, this is when your water is present at x percent in your soap bar, you would take 3.33 and divide by 5.2 to give you a bar that is 64.03% water.
wait until the cure is done and re-weigh the bars(or half way through ... and then again when done)..
lets say it drops to 5 oz, so that means you lost that extra .2 of an oz of water due to evaporation.
then you take .2 (the amount that has changed..) and divide that by your final bar weight... that gives us 4% of "stuff" evaporated out of your bar of soap.....so that means that each bar is weighs 4 percent less, and thus contains 4% less water, which we can plug into our original equation to extrapolate the volume of water lost..
then set up the equation like this:
take the orgin % of water in the bar, multiplied by x, then the amount of h20 used in the whole batch multiplied by 4%...
.6403(100)=20oz
.04(100)=X
cross-multiply....
.6403(100)X=20oz(.04)(100)
64.03X=80oz
X=.8oz
so that means per bar you lost .8 oz of water....
(check my math... this was kind of like dusting the cobwebs off the math part of my brain... so i make no guarantee on my math... but i think its right!)
AshleyR
Well-Known Member
IanT - it hurt my head to read that. LOL. I'm so amazed at how good many of you are at coming up with these formulas and equations so easily when it comes to soap! I'm horrible at math!
LomondSoap
Well-Known Member
I just list water first, it's the largest single weight in my batch. I don't use any formula, I just always list the liquid first. If it is a tea or milk I put that in brackets
ie aqua (chamomile tea) or aqua, caprae lac etc
ie aqua (chamomile tea) or aqua, caprae lac etc
Sorry for breaking your brain Similar threads
