Question: a sachet contains 50 ml of solution and will be...
A sachet contains 50 mL of solution and will be mixed with 500 mL of normal saline, which has a final concentration of 0.02% chlorhexidine. You have only chlorhexidine gluconate solution BP, containing 20% w/v chlorhexidine gluconate.
Calculate the volume of chlorhexidine gluconate solution BP which needs to be included in each sachet. (MW of chlorhexidine is 505; MW of chlorhexidine gluconate is 898)