This item is 2 of each of the 21 gourmet Liquid Cultures (LCs) that MMM currently offers so 42 total LCs.
I recommend using 1 to make spawn, expand on agar or make more LC and the other can be kept as a master in the fridge, given as gifts, or traded for other species.
The price for the Full library is less than using 4 10gourmet discount codes. A great way to have all of the favorite gourmet species and some that are less available at an amazing price.
All gourmet liquid cultures (LCs) are provided with a 16g needle (in the manufacturer’s packaging) and come in 10 mL capped syringes. They will be labelled and are grown in a 2% malt extract solution. Shake well before use.