Bostik Mortar Admix is a 5L container of a product designed to improve the properties of mortar. It minimises cracking, shrinkage and crazing, and reduces the water content of mortar. The container is a jerry can, and the product has a storage life of 12 months. It is available in a dark brown colour and comes with a 1 year guarantee. The product improves plasticity and provides frost resistance in set mortar.