All CO2 tanks must be tested and certified for use every 5 years. If you're exchanging a CO2 tank that is no longer certified (check the most recent date stamped onto the tank) you'll need to pay for a hydrostatic test when you exchange your tank.
All CO2 tanks must be tested and certified for use every 5 years. If you're exchanging a CO2 tank that is no longer certified (check the most recent date stamped onto the tank) you'll need to pay for a hydrostatic test when you exchange your tank.