Hi, so I'm trying to figure out the math behind 500ml of MEM w/ 10% FBS; 1% P/S, I looked around the forum and found a similar topic, the answer that was provided was:
" If a bottle of DMEM/RPMI is 500ml and you need to make up a 10% FBS/FCS solution .....then you need to add 55mls of FBS/FCS to the 500ml of media. If you do not then you are adding a 10% error into your experiment straight away."
can someone please explain how they got the 55ml? I was told to divide 500/9, I did get the 55.5, however why is it divided by 9? I am very new to this is and is a bit confusing.
Thanks in advance!