As per tender document.
Supply of 20 (Twenty) cylinders of Liquid Ammonia Gas (NH3, Refrigerant Grade, R-717), each cylinder containing 50 kg net weight, suitable for industrial fish cold storage refrigeration systems. The Tenderer shall supply the Liquid Ammonia Gas (NH3, Refrigerant Grade, R-717) in the Tenderer's own cylinders and transfer the gas into the Purchaser's Liquid Ammonia receiver. Upon completion of the transfer, the Tenderer shall remove and take back the 20 (Twenty) empty cylinders.