Tristone is a brand of Acrylic Solid Surface. Acrylic Solid Surface is a composite material made of ATH (Alumina-Trihydrate), additives and high performance resins. ATH is inert and non toxic, and it can be used as a fire retardant. Pigments and minerals are used to achieve the stone or granite-like effects within the surface. Due to the highly customisable nature of solid surface as a product, it can be used to create one of a kind designs and colours that might not be achievable with granite or stone.

The purity of ATH in Tristone is 99.8% with a particle size of 10 microns. The 70% mineral composition is a very important factor in the behaviour of solid surface from fabrication to the end user. Tristone's mineral based composition means that it is warm to the touch. The developed formula also gives Tristone a number of benefits that may not be possible with other materials.