The Fernox F7 Biocide 200ml is a white, corrosion-resistant solution designed to provide low-temperature heating protection for storage tank water heaters. Made by the trusted brand Fernox in the United Kingdom, this product is suitable for indoor use and is ideal for boilers operating in the A+++ to E energy efficiency range. With a tank capacity of 500ml and a first-hour recovery rate of 204 litres per hour, this biocide offers reliable performance and peace of mind for your heating system. The product also comes with a manufacturer warranty of 1 year, ensuring quality and durability. 2025 Date