tag:blogger.com,1999:blog-5223585695681936410.post7120179192547683617..comments2017-07-20T12:04:04.415-07:00Comments on Point of Interest!: Weight vs. volumeSusan Barclay-Nicholshttp://www.blogger.com/profile/08929716042707110612noreply@blogger.comBlogger7125tag:blogger.com,1999:blog-5223585695681936410.post-65495943171238553092015-05-16T08:40:18.096-07:002015-05-16T08:40:18.096-07:00Hi Susan,
I'm trying to wrap my head around ho...Hi Susan,<br />I'm trying to wrap my head around how much liquid I'm actually using by doing the math with the specific gravity and I want to make sure I'm doing it correctly, can you confirm? Just to give an example, if I use 20g of oil and it's specific gravity is 0.92, I multiply 0.92 x 20g to find out how man ml I actually used? Or do I need to divide 20g / 0.92? I weigh all of my ingredients but I also need to figure out how many ml I'm actually using. Thanks so much!<br />AshleyAshleynoreply@blogger.comtag:blogger.com,1999:blog-5223585695681936410.post-16396764180255238702015-02-14T11:00:32.424-08:002015-02-14T11:00:32.424-08:00Hi Deja. I don't work with ml ever, so I can&#...Hi Deja. I don't work with ml ever, so I can't help in this regard. I work only in weights and percentages. For instance, your recipe would be 8.63 grams total, which could make 10 ml - I don't know that information. You have 94.4% water and 5.6% LAA (what is this ingredient?). Is this the right percentage for usage of this ingredient? <br /><br />I can't stress enough how much you want to work with weights, not volume. Don't worry about density - start with weight. Susan Barclay-Nicholshttp://www.blogger.com/profile/08929716042707110612noreply@blogger.comtag:blogger.com,1999:blog-5223585695681936410.post-77434415365344626782015-02-12T15:17:43.218-08:002015-02-12T15:17:43.218-08:00What about weight vs. density?
I've been usin...What about weight vs. density?<br /><br />I've been using batch size calculator: http://www.wholesalesuppliesplus.com/Calculators/Batch_Size_Calculator.aspx for more than two years and never had a problem until my friend told me that it is inaccurate because not everything weighs the same. <br /><br />For instance, he said if I wanted to make 5% vitamin C serum. LAA has a density of 1.65g/cm3, so for 10ml serum I would need 0.825g LAA. But, the batch size calculator said I would need 0.48g LAA and 8.15g water. Which one is right?<br /><br /><br /><br /><br /><br />Dejahttp://thepigletandtheboar.comnoreply@blogger.comtag:blogger.com,1999:blog-5223585695681936410.post-12715733105467442212014-04-02T12:54:08.928-07:002014-04-02T12:54:08.928-07:00Hi Ann. The questions about shelf life are answere...Hi Ann. The questions about shelf life are answered in the FAQ in the posts on shelf life and in the individual posts on the oils you mention. Adding Vitamin E is good for extending the shelf life, so you have to decide if you think the shelf life needs extending. As for how much to add? I can't help if you're in volume measurements as the suggested usage is 0.5% by weight. Why are you making such a large batch of lotion bars? And why aren't you using weighted measurements? Susan Barclay-Nicholshttp://www.blogger.com/profile/08929716042707110612noreply@blogger.comtag:blogger.com,1999:blog-5223585695681936410.post-52334538151092100712014-04-02T09:30:23.349-07:002014-04-02T09:30:23.349-07:00I am brand new into making lotion bars. I have a ...I am brand new into making lotion bars. I have a simple recipe, equal parts of shea butter, coconut oil, & beeswax. <br /><br />If I use 1 cup for measuring, I end up with 3 cups of liquid to pour into the molds.<br /><br />What is the best vitamin E to add to this, & how much and what measuring method? <br />I don't have a special scale. I do have plastic 3 ml droppers.<br />Can I use vitamin E capsules? If yes, how many capsules for 3 cups liquid?<br />I have some Burt's Bees Vitamin E body & bath oil....can I use that?<br />How do I know what kind of vitamin E to use, and where do you get it?<br />IS IT EVEN NECESSARY to add vitamin E to my recipe?<br /><br />What might the shelf be without adding vitamin E, and what might it be adding vitamin E to it?<br /><br />I like the idea of making the bars to last longer, but I want to keep this simple, as reading about this makes my simple head spin.Annnoreply@blogger.comtag:blogger.com,1999:blog-5223585695681936410.post-91943380728213561692011-02-23T08:07:28.239-08:002011-02-23T08:07:28.239-08:00Hi Pam. If you're converting every single ingr...Hi Pam. If you're converting every single ingredient by the same amount, it shouldn't make a difference, as long as every ingredient is changed by the same amount. If you have a digital scale, you can just hit the "gram/oz" button and change it easily that way. <br /><br />If you think about it, if you have 10 ounces of water - which would be 283.495 grams of water - and 5 ounces of oil - 141.7475 grams of oils - it doesn't make a huge different if you're considering that 300 grams of water and 150 grams of oil because you've multiplied every percentage by the same number, so you have the same ratios! In the future, it's easier just to think of it as 30 grams for sanity's sake, but it won't ruin your recipes!Susan Barclay-Nicholshttp://www.blogger.com/profile/08929716042707110612noreply@blogger.comtag:blogger.com,1999:blog-5223585695681936410.post-57174977832435430212011-02-23T07:20:17.458-08:002011-02-23T07:20:17.458-08:00Hi Susan,
Another great post. I just realized th...Hi Susan,<br /><br />Another great post. I just realized that I am using 28.3495 as the gram equivalent to 1 ounce. How much do you think this would impact the outcome of my lotions? I will change the rate to 30.Pamhttp://www.blogger.com/profile/17269518758766911265noreply@blogger.com