You cannot transport liquid nitrogen in a standard thermos or plastic container.
To buy liquid nitrogen for making ice cream, you typically need to visit specialized industrial gas suppliers or welding supply shops , as it is not available at standard grocery stores.
: Some suppliers like Airgas may loan or rent a Dewar for a refundable deposit (often around $200–$300). Alternatively, you can purchase one on sites like Amazon .
Most individuals source liquid nitrogen from regional or national industrial gas distributors.
: Stores that service cattle farms sometimes stock it for semen preservation. Critical Equipment: The Dewar Flask
: Large national companies like Airgas and Linde (formerly Praxair) often sell to individuals. Local welding shops are also common retailers.
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