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This sterile liquid nutrient agar comes ready to use. Just heat, pour into petri dishes, and inoculate with whatever bacteria culture you choose. (Or use it to grow bacteria taken from your mouth or another surface.) There's enough nutrient agar in the bottle to cover ten 100mm dishes.
Nutrient agar is the best all-around choice for growing bacteria and other microbe cultures. Use it if you are unsure of either the bacteria type you are growing or the preferred culture media for your bacteria. Some more fastidious bacteria (those with complex nutrient requirements) prefer tryptic soy agar.
Major ingredients: water, agar, peptone, beef/yeast extract.