How to make agar agar?

I need to make a blood agar and the store send me only sheep blood how i can make the agar with that?

• Answer:

  Blood agar is trypticase soy agar supplemented with 5% sheep blood. You got exactly the right thing you need, since the threat of blood borne pathogens in human blood precludes its sale by any store with a sense of ethics, and the brains to avoid a lawsuit by the administrators of your estate after you died of AIDS or hepatitis. If you have the commercially prepared blood agar base, the preparation instructions are on the label of the bottle it comes in. Don't heat the blood along with the base, or you'll wind up with an ugly mass of chocolate brown clots. Let the heated base cool, then add the blood to a final concentration of 5%. Good luck!