Mesa A.Ş. running casting operations under process controls by gathering datas from physical examination of sample parts and sand, transforming this datas into reports. Mesa A.Ş. has a foundry laboratory equipped with modern equipments and machines. Chemical composition tests are done by Foundry Master spectometer. Compression strength of sand, gas permeabilitiy compactibility values are measured by George Fisher test equipment. The properties like expected strenghth, machinability and micro structure are measured with the hardness testing machines and optical microscope. Carbon, silisium and carbon equivalent, the temperature of liquid matel and spherical structure of material is measured by thermic analyzer integrated to melting unit. Destructive and non-destructive tests (NDT) are performed by qualified and certified personnel, using in-house tools and equipment.