Suppliers will not dispense liquid nitrogen into standard thermoses or unapproved containers. You must provide or purchase a Dewar , a specialized vacuum-insulated flask designed to safely vent gas as the liquid boils.
Farmers use liquid nitrogen for artificial insemination, so cattle supply chains often carry it.
For safety, filling is almost always handled by trained professionals at the supply facility rather than the customer. 2. Common Suppliers is it legal to buy liquid nitrogen
Large companies like Airgas and Messer supply gases to both businesses and individuals.
Local independent welding shops are often the most accessible source for small quantities. Suppliers will not dispense liquid nitrogen into standard
Although you do not need a license to buy it, suppliers typically require you to meet specific conditions before they will complete a sale:
Liquid nitrogen is not typically sold over-the-counter in retail stores. Common sources include: For safety, filling is almost always handled by
Many local distributors (e.g., welding supply shops) may require you to review safety protocols or sign a liability waiver.