*X12 PACK HV100 Inhibitor* HV100 Manufactured By Calmag Yorkshire Ltd A general purpose treatment for total protection against scale and corrosion in all types of indirect central heating systems, including those containing aluminium. Will extend the life of the system, and ensure maximum efficiency and minimum fuel usage. Once added, HV100 never needs to be replaced unless the system is drained down. •Inhibitor •Enhanced scale corrosion protection •For all system metals •pH neutral formulation- easy to handle •Ensures optimum boiler efficiency •Prevents boiler noise •Prevents pin-holing •Helps prevent the formation of hydrogen gas •A simple test kit is available to check levels •Harmless To The Environment, Completely Non-Toxic And Biodegradable HV100 Contains.