These pre-poured agar slants are for long-term storage of mushroom cultures. IDEA FOR CULTURE STORAGE: These pre-poured agar slants are for long-term storage of mushroom cultures. Each slant contains approximately 10 ml of pre-sterilized potato dextrose agar (PDA) or malt extract agar (MEA) in a 15 ml polypropylene tube. HOW TO USE: Allow your agar slant to equilibrate at room temperature before use. Then, in a sterile environment, transfer mycelium from a plate into slant. Store in the refrigerator for up to a year. HOW TO STORE: Store your unused slants upright in a cool location. In the absence of a refrigerator, store them in a cold room. BE AWARE: Check for condensation from time to time. Condensation means there is a heat source driving out water from the agar, which will dry it out quickly. SHELF LIFE: Use within 1 year of receipt. These pre-poured agar slants are for long-term storage of mushroom cultures. Each slant contains approximately 10 ml of pre-sterilized potato dextrose agar (PDA) or malt extract agar (MEA) in a 15 ml polypropylene tube. To use: Allow your agar slant to equilibrate at room temperature before use. Then, in a sterile environment, transfer mycelium from a plate into slant. Store in the refrigerator for up to a year. Storing unused slants: Store your unused slants upright in a cool location. In the absence of a refrigerator, store them in a cold room. Check for condensation from time to time. Condensation means there is a heat source driving out water from the agar, which will dry it out quickly. Use within 1 year of receipt.