Quick, convenient and doses in 30 seconds|Simple to use with no mess|100% recyclable can|Protects against corrosion and limescale|Maintains system efficiency and extends boiler life|Stops frequent venting of radiators|pH 8.1 (conc)
Fernox Central Heating Protector, Series: F1 Express, Aerosol Can, 9 oz, Liquid, Light Brown, Slightly Aromatic, pH: 7 to 8, 1.18 Specific Gravity, 68 deg F