For consistent product quality in clean room industries, the clean air systems, equipments and clean rooms should be validated for the designed performance on a regular basis. Frequency of such validation depends on the type of industry and stringency of requirements. Thermadyne, known for their standard of excellence and services in the field of clean air equipments, systems and clean rooms, also offer this validation facility. Parameters checked to international standards are particle count using laser counter, laminar or other air velocities and pressure differential across filters or in clean rooms. All these are measured using calibrated equipments to world standards. Most beneficial for pharmaceutical and electronic industry and hospitals. The company also offers yearly contracts.