Mansfield Cryogenics Ltd comply to the strict regulations for the transportation and handling of Liquid Nitrogen, please see on the webpages aside general guidance primarily aimed at end users - these will be in time amended to become downloadable files, so that clients and potential clients can print these out locally. To dispel a couple of myth's about Liquid Nitrogen ... Liquid Nitrogen on its own is not flammable or toxic BUT it is an asphyxiant in enclosed and unvented environments. Once Liquid Nitrogen is exposed to the environment it expands to 694 times its own size , and can in an enclosed and unvented environment remove the oxygen content. Where storage areas are confined .. you must ensure that adequate ventilation exists - if you are unsure about the storage facilitiesand are considering using Liquid Nitrogen on site then please do contact us for further advice or to arrange a site visit on 01623 621600 .