So I sat down and did some math today, I figured I'd post my math so that someone else that hadn't done the math yet wouldn't have to do it (can you tell I love math?)~
So my Germall finally got here, and I'm making some lotion - starting with 1 lb since that's probably the smallest amount I can accurately measure... my scale doesn't do decimals, so I measure everything in grams rather than ounces.
According to MMS, liquid Germall needs to be .1-.5% of the product by weight (only above .2% if using high protein materials). So if I'm making 1 lb lotion, that is 454 grams lotion. 0.1%, that is .45 g Germall/pound lotion.
My scale does not measure decimals... so, the weight of Germall is 1200 g/L, or 1.2g/mL. This means that my .45g Germall = .375 mL. 1 mL = 20 drops, so .375 mL = 7.5 drops.
Thus, you need 7.5 drops liquid Germall per pound lotion to equal 0.1%. Note this is only for Germall, I don't know what the concentration recommended is for other preservatives. And I realize that "drops" isn't the most exact measurement out there, but it's the best I can do.
If someone notices any blatant errors in my math, let me know... chemistry was not my favorite class, lol.
So my Germall finally got here, and I'm making some lotion - starting with 1 lb since that's probably the smallest amount I can accurately measure... my scale doesn't do decimals, so I measure everything in grams rather than ounces.
According to MMS, liquid Germall needs to be .1-.5% of the product by weight (only above .2% if using high protein materials). So if I'm making 1 lb lotion, that is 454 grams lotion. 0.1%, that is .45 g Germall/pound lotion.
My scale does not measure decimals... so, the weight of Germall is 1200 g/L, or 1.2g/mL. This means that my .45g Germall = .375 mL. 1 mL = 20 drops, so .375 mL = 7.5 drops.
Thus, you need 7.5 drops liquid Germall per pound lotion to equal 0.1%. Note this is only for Germall, I don't know what the concentration recommended is for other preservatives. And I realize that "drops" isn't the most exact measurement out there, but it's the best I can do.
If someone notices any blatant errors in my math, let me know... chemistry was not my favorite class, lol.
