Sorry for this basic question on a professional forum!!
it has been a while since I worked in the preparation of stock solutions and now am back to learning happily.
I just need to prepare a 1056 ml solution (not water) containing 2.1% NACL. Shall I just add 21 g of NACL and make it up to 1056 and If so I need to first dilute the salt to make it up, would not this change the final concentration?
Appreciate your input!!