Specific Gravity
It seems that there is a lot of confusion about 'specific gravity' that I thought I would try to enlighten us all.
Specific gravity is the relationship between the weight and the volume of a liquid, with reference to water. Yeah OK. So if one gallon (US) of pure water weighs 8.3 lbs, how much would a gallon of apricot oil weigh, to make it simple lets say the Specific gravity (s.g.) of apricot oil is 0.90, the sum is 1 x 8.3 x 0.9 = 7.47lbs. Or, 1fluid ounce (US) of water weighs 1.0375 ounces (weight), so 16 fl oz of our apricot will weigh 16 x 1.0375 x 0.9 = 14.94 oz
For the metric speakers amongst us, it is even easier, 1L of water weighs 1kg, therefore our 1L of apricot weighs 1 x 0.9 = 0.9kg, therefore 100ml is 100 x 0.9 = 90gms
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| For Example |
| Liquid |
Quantity |
s.g. |
Calculation |
Results |
| Eucalyptus |
8 fl oz |
0.9124 |
8 fl oz x 1.0375 x 0.9124 |
7.5729 oz |
Eucalyptus |
8 oz |
0.9124 |
8 / 1.0375 / 0.9124 |
8.45 fl oz |
| Cassia |
16 fl oz |
1.0564 |
16 fl oz x 1.0375 x 1.0564 |
17.536 oz |
Cassia |
1lb (16oz) |
1.0564 |
16 / 1.0375 / 1.0564 |
14.598 fl oz |
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