8 g approximately 1 liter of soda water can be made in one cartridge (10 ml) cartridge contains 10.
【Best (consumed) information: This item is due to metal sealing plate complete sealing, purity 99.5% or more of carbon dioxide is in the cartridge in. Without oxygen in the air to invade cartridge are sealed so no oxidation. Also, without carbon dioxide changes and degradation, no expiration date (consumer) not been described above.
Soda cartridges here are "NTG (Japan carbonic acid gas) stainless steel siphon, soda siphon, soda siphon, ' is a 'bubble master (beer with a foam generator) (white / black)' en espuma sparkling rings (CO2 espuma). * Please note not use another manufacturer's product.