Re: converting weight to volume

[Guest guest]

I think I'll stick to soyburgers, but thank you anyway. <sigh>

How do people work out the amount of preservative to use in creams and

lotions?

I hope that makes sense!!

but you can't do it unless you know the specific gravity.

well... sometimes we don't KNOW the sg... so we have to measure. very

carefully...

[Guest guest]

I think I'll stick to soyburgers, but thank you anyway. <sigh>

How do people work out the amount of preservative to use in creams and

lotions?

I hope that makes sense!!

but you can't do it unless you know the specific gravity.

well... sometimes we don't KNOW the sg... so we have to measure. very

carefully...

[Guest guest]

At 09:09 AM 11/28/2004, you wrote:

>

>How would you covert volume to weight? This has been driving me nuts for

>years.

>

and back again... This can/does make me nuts too. we sell by volume. some

of our sources sell by volume, some by weight. and then there's those who

sell by the lb, or by the kilo...

So...

You NEED to know the specific gravity of the item... how much it weighs

relative to water.

for water... one gram = one milliliter... or one kilogram = one liter.

OKAY... our English Chamomile has a specific gravity of 0.9. (lighter

than water.)

one kilo of that oil has how many ounces by volume????

the math equation is.... ml = grams / specific gravity.

1 kilo (1000 grams) = 1000/0.9 = 1.111 liters... (and then I do the

liter to ounce conversion.)

but it all depends on my knowing the specific gravity of the substance.

to calculate how many grams if you know how many ml... (ie, to find the

weight of a specific volume of stuff)

the formula is: grams = ml X specific gravity.

so if I have one liter of the English Cham... it will be 1000X.09 =

900 grams.

I hope that makes sense!!

but you can't do it unless you know the specific gravity.

well... sometimes we don't KNOW the sg... so we have to measure. very

carefully...

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[Guest guest]

well i was told froma comp i called ...germaben ll...use when base is

25% of oil and germall plus liquid..as low as .25% for shampoo and

for creams its .5%..which i was told was the best...but no preservs

are best i guess if u can avoid it