The largest building material testing laboratory of its kind in the state of Bihar, Quality Test lab Pvt. Ltd. specializes in the field of testing the various building materials. Situated in Patna, the laboratory supports the instrumentation for the mechanical characterization of bricks, concrete cubes, paver block, cement, steel, aggregate, fine aggregate and coarse aggregate materials. It is well equipped with compression testing machine, los angles absorption tester and vibration machines along with other laboratory instruments to test for the useful chemical parameters of the various building materials. The laboratory also provides the facility to test the properties such as the grain size, Atterbergâ€™s limit, liquid limit, plastic limit and free swell index of soil.