Medical oxygen is used for breathing and therapeutic purposes (cardiovascular insufficiency, ischemia, hypoxic conditions, angina, pneumonia, asthma, during anesthesia, and other medical cases).

• In hyperbaric chambers
• Refilling oxygen generators (oxygen masks, cushions, etc.)
• In rooms with a special microclimate
• In the production of oxygen cocktails
• For cultivating microorganisms on petroleum waxes

• Liquid oxygen is non-toxic, non-combustible, and non-explosive. However, being a strong oxidizer, it greatly increases the flammability of other materials. Certain materials (wood, paper, asphalt, coal, etc.) soaked in liquid oxygen can detonate. Therefore, only approved materials can be used when working in contact with oxygen.
• The packaging, labeling, transportation, and storage of medical oxygen should comply with the standard GOST 26460-85. The nominal pressure of oxygen at 20°C during filling, storage, and transportation of cylinders should be (14.7 + 0.5) MPa (150 + 5) kgf/cm² or (19.6 + 1.0) MPa [(200 + 10) kgf/cm²].
• The transportation marking should follow the standard GOST 14192-77 with the application of the handling sign <Sensitive to heat>, danger signs according to GOST 19433-81 for classes 2 and 5, and subclass 2.1; classification code of group 2121. 4.8. (Excluded. Amend. № 1).
• Liquid oxygen, when in contact with exposed skin, can cause frostbite and can also affect the mucous membranes of the eyes. When collecting liquid oxygen samples, protective goggles and canvas gloves should be worn.
• The technology of working with liquid oxygen should prevent the uncontrolled accumulation of organic and other combustible substances in it.
• Draining of liquid oxygen should be carried out in specially designated areas with a covering that does not contain organic materials. Areas prone to leaks or liquid oxygen spills should also not have coverings containing organic materials.
• The volumetric concentration of oxygen in the working area should not exceed 23%. Flows or leaks of liquid oxygen can create zones with an increased oxygen content, posing a fire hazard. These zones should be marked with special warning signs, limit the presence of people, and should not contain easily ignitable materials. If these zones are located in enclosed spaces, they should be equipped with air monitoring devices and automatic ventilation for air exchange.
• Before performing repair work or inspecting a transport or stationary container that has been in use for liquid oxygen, it should be heated to the ambient temperature and purged with air. Work can commence after reducing the volumetric concentration of oxygen inside the container to 23%.
• After being in an oxygen-enriched environment, smoking, open flames, and proximity to fire are not allowed. Clothing should be ventilated for 30 minutes.
• Tanks filled with oxygen during transportation should be secured to prevent movement and impact. Cryogenic vessels should be transported in an upright position.
• Transport devices used for the transportation of tanks and cryogenic vessels should be clean and safe from a fire perspective. Transporting oxygen-filled tanks and cryogenic vessels together with fatty substances is prohibited.