The CO2 tank must be refilled at an authorized local station. Options depend on location:
- US — Airgas (airgas.com) is recommended and offers a cylinder exchange service; local welding supply shops, fire protection shops, and some sporting goods stores (e.g. Dick's Sporting Goods) also carry refills.
- Ukraine — refill or exchange through a local industrial/welding gas supplier or fire-safety equipment shop; the Mosqitter distributor (TerraHome, Topiar, or Epicentr) can point to the nearest option.
Important: the tank must carry the appropriate certification for the country (DOT-approved in the U.S.). Refer to the CO2 tank specifications in the manual.