![]() ![]() If you were making 100 g of your product and add 50 ml of the oil during manufacture, this will be 50 x 0.9 g/ml = 45 g. If the total mass of your solution is 100 g, you first need to know the mass of the oil. If a raw material in your formula is a liquid and measured by volume, you must know the mass of this, which requires a density value.Īn oil in your formula has a density of 0.9 g/ml. Note that ‘weight’ refers to mass (i.e., as measured on scales). The %w/w formula is expressed as follows: By solute we mean, a raw material that is used in your formula, whereas solution refers to the total resultant mixture of your product. In percent solutions, the weight of a solute is expressed as a percentage of the total solution in weight. This is the most universally accepted method for formulation of cosmetic products and the method that is used in Product Manager. To use Product Manager it is important that you understand the principle of entering %w/w amounts in your formula’s composition.
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