Sauermann - The pH Safe 1 Neutralization Cartridge is safe, easy-to-install and eco-friendly. It's capable of neutralizing up to 200 gallons (800 liters) of acidic condensates at pH3. The pH Safe 1 has been specifically designed to treat condensates produced by gas condensing boilers for use with Sauermann centrifugal tank pumps. Preserves the plumbing system and the environment Prevents damage to concrete and plastics Prevents corrosion on metal parts Easy-to-install and replaces; fits right into the tank pump inlet