percentage concentration скачать в хорошем качестве

percentage concentration

Percentage Concentration % w/v = number of grams in 100mL (A solid is dissolved in a liquid, thus 5% w/v means 5 g in 100 mL.) % w/w = number of grams in 100 g (A solid mixed with another solid, thus 5% w/w means 5 g in 100 g.) %v/v = number of mL in 100mL (A liquid is mixed or diluted with another liquid, thus 5% v/v means 5mL in 100 mL.) • Most common percentage strength encountered is % w/v. • There will always be the same amount of drug present in 100mL irrespective of the total volume. Thus in a 5% w/v solution, there is 5g dissolved in each 100mL of fluid and this will remain the same if it is a 500mL bag or a 1 litre bag. • To find the total amount of drug present, the total volume must be taken into account – in 500mL of a 5% w/v solution there is a total of 25g present.