Imperial Lab Equipments Private Limited offers Air-Water Constant Pressure System. Imperial Lab Equipments Private Limited is an ISO 9001:2000 accredited company. The Company also manufactures rock testing machines, concrete testing machines, soil testing machines, cement, lime, plaster and mortar testing machines etc. The Air-Water Constant Pressure System is used for testing soil constituency. The Air-Water Constant Pressure System is made using top quality components and spares. This Air-Water Constant Pressure System is a variety of soil testing machines offered by the company. The available varieties of soil testing machines are universal automatic compactor, cone penetrometer, consolidation apparatus, de-aired water apparatus, direct shear apparatus, liquid limit device, load frame, permeability apparatus., pore pressure apparatus, riffle sample divider, sample extractor etc.