1.Ultrabond is a 2 part primer and bond enhancer for on-site mixing.2.Each 20kg of Ultrabond powder requires 5 litres of Ultrabond liquid by weight. To mix by volume, combine 3 parts liquid to 10 parts powder.3.Add powder slowly into the liquid while mechanically stirring to ensure proper mixing. Always add powder to liquid.4.Allow the mix to stand for 10 minutes and then re-stir before using.