Glycol-based product with organic corrosion inhibitors to protect against freezing, corrosion, scale and bacteria build-up within heat pump installations. Inhibited without the use of harmful minerals/inorganics such as borates, nitrites, amines, chromates silicate and phosphates which have high depletion rates. Provides excellent thermal efficiency, extends system life and reduces glycol ageing. Corrosion, Scaling & Bacteriological Protection Exempt from Potentially Harmful Additives Biodegradable pH Stable Corrosion, Scaling & Bacteriological Protection Exempt from Potentially Harmful Additives Biodegradable pH Stable