A natural agar powder with no additives of any kind. Excellent for the culture of microorganisms. A non nutritional sea weed derivative which after mixing with hot water and cooling, forms a firm gel. Excellent base for agar formulas. Sterilization required. This is the very Agar we use in our Quick-Mix and Pre Poured Dishes so you know it’s top notch. Use with our Light Malt Extract for pouring your own petri dishes. Makes an excellent base for agar formulas. Sterilization required.