Sauermann PH0100SIUN23 pH Safe1 Neutralization cartridge The Sauermann PH0100SIUN23 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 producted by gas condensing boilers. Preserves the plumbing system & the environment, Prevents damage to concrete & plastics, Prevents corrosion on metal parts. Preserve the plumbing system and the environment Prevents damage on concrete and plastics Prevents corrosion on metal parts Easy to install and replace; quick fit cartridge slots inside the pump inlet No limestone sludge build up No dead volume of sulphur Preserve the plumbing system and the environment Prevents damage on concrete and plastics Prevents corrosion on metal parts Easy to install and replace; quick fit cartridge slots inside the pump inlet No limestone sludge build up No dead volume of sulphur