Formaldehyde Blend Contains:Mixture of Formaldehyde, Copper Sulphate, Aluminium Sulphate, and Zinc Sulphate Usage:Use at 3% concentration (6 litres in 200 litres of water)ArkHoof Formaldehyde Blend£70.00PriceSizes*SelectQuantity*Add to CartFree Shipping Delivery is FREE for orders above £230 Orders below £230, delivery is £50SDS InfoClick Here to Download SDS Information.