Liquid culture syringes are made in a sterile laboratory using only high quality strains of mycelium from lab cultivated edible mushrooms. This saves you a lot of time as you simply inject the liquid culture mycelium directly into your substrate and healthy mycelium starts spreading quickly. We sell a variety of delicious species that are easy to grow. Gourmet edible mushroom liquid culture syringes are sold in quality BD 10cc syringes along with a 16 gauge 1.5 inch needle. The syringes can be sterilized and reused later for mycology purposes. Liquid cultures should be stored in the refrigerator until ready to use. We guarantee live healthy cultures for at least 45 days after delivery. If stored in the refrigerator realistically they can last for about 2 to 3 months before they run out of nutrients and start to contaminate. It's best to only buy liquid cultures if you can use them soon.