For Maurice about the Germall Plus

[Guest guest]

Maurice, since my digital scale doesn't do well with really low

grams, I did a weight of 6 grams to see how many tsp it would give

me. Well, according to my measurements, 6 grams will give me a

little over 1 tsp. So for a 21 ounces batch of lotion, I'd have to

use 1/4 tsp of the liquid Germall Plus.

I did also take some of the liquid Germall Plus and rub some on a

sensitive area of my underarm to see what would happen. Nothing

happened, it was not burning nor itching. But when I took some of

the Grapeseed Oil which was solvent extracted and rubbed it on my one

side of the face, after awhile it was burning. Should oils that are

solvent extracted be used in lotion at all?

Thank you for you help, I appreciate it!

Irene

[Guest guest]

>Maurice, since my digital scale doesn't do well with really low

>grams, I did a weight of 6 grams to see how many tsp it would give

>me. Well, according to my measurements, 6 grams will give me a

>little over 1 tsp. So for a 21 ounces batch of lotion, I'd have to

>use 1/4 tsp of the liquid Germall Plus.

I don't know the density of Liquid Germall Plus. But knowing that

Liquid Germall Plus is 60% Propylene Glycol and 40% Germall Plus, I can

estimate the density to be 1.022 grams per milliliter (mL).

We know that 1 teaspoon = 5 mL.

Assuming my estimated density is accurate, 1 teaspoon = 5 mL = (5 mL X

1.022 g/mL) = 5.11 grams.

So, " a little over 1 tsp " of Liquid Germall Plus could weigh 6 grams.

OK, let's deal with 21 oz batch of lotion.

>According to my calculations, if I'm

>using the liquid Germall Plus at .2%, I need to add .024 ounces which

>I converted to 1.19 grams. Is that correct?

Well, let's see. If

21 oz = 100%

X oz = 0.2%

X = .024 oz

But we know that there are 28.35 grams in one ounce,

therefore .042 x 28.35 = 1.1907 grams.

So, if we assume that the density of Liquid Germall Plus is 1.022 grams

per milliliter,

then

1.022 grams = 1 mL

1.1907 grams = X mL

X = (1.1907/1.022) = 1.165 mL

but we know that

1 teaspoon = 5 mL

X teaspoon = 1.165 mL

X = (1.165/5) = 0.233 oz

so using 1/4 teaspoon of Liquid Germall Plus per 21 oz of unpreserved

base seems to be reasonable and safe ASSUMING:

1) your 1/4 teaspoon measuring device is accurate

2) the density of Liquid Germall Plus is 1.022 g/mL.

I haven't seen any recommended usage rates for Liquid Germall Plus from

ISP/Sutton. ISP/Sutton do recommend using 0.05% to 0.2% Germall Plus.

Knowing this and the fact that Liquid Germall Plus is a 40% solution of

Germall Plus in Propylene Glycol, we can calculate the recommended

using Liquid Germall Plus anywhere from 0.125% to 0.5%.

Using 0.2% Liquid Germall Plus is equivalent to using Germall Plus at

0.08%.

This could be an effective level.

But I would use Liquid Germall Plus at 0.3% to 0.5%.

And I have to add this; measuring out chemicals with teaspoons and

tablespoons is a potentially dangerous practice.

Maurice

------------------------

Maurice O. Hevey

Convergent Cosmetics, Inc.

http://www.ConvergentCosmetics.com

[Guest guest]

>I haven't seen any recommended usage rates for Liquid Germall Plus from

>ISP/Sutton. ISP/Sutton do recommend using 0.05% to 0.2% Germall Plus.

The recommended use level range for Liquid Germall Plus is 0.1 - 0.5%. A

level of 0.5% may be required for products containing proteins and/or other

complex ingredients. Liquid Germall Plus can be used up to 1.25% for both

leave on and rinse off products.

As for density, I have on my site that it's 1200g of LGP in a litre, but

that's not quite exact. I get 16L out of a 20kg pail. If that helps any...

Warmly,

Sherri

Oshun - Wholesale Cosmetic Ingredients & Packaging

www.oshun.ca

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