Turn one spore or culture syringe into 30 syringes! Our liquid culture expander kit saves you time and money by allowing you to easily turn a single 10ml culture or spore syringe into 300ml of liquid culture without the use of expensive equipment. Formulated for swift spore ...Turn one spore or culture syringe into 30 syringes! Our liquid culture expander kit saves you time and money by allowing you to easily turn a single 10ml culture or spore syringe into 300ml of liquid culture without the use of expensive equipment. Formulated for swift spore germination and rapid mycelial growth, our sterile, nutrient-rich “expander broth” was formulated by mycologists and is the ideal environment for growing mycelium.