Micro-gas deposited bottle is used in fire extinguisher, life jacket, life boat, car air chamber, breathing machine, sport-used Soda Siphon MachineInstructions for use:Before filling your soda siphon, always inspect the item to make sure it is clean and free from any damage or wear.Fill the soda siphon with water to the measuring line located about two-thirds the way up the glass bottle. For best ...