IDI

Machines for Slaking Lime; Machines for Manufacturing Carbon Dioxide; Machines for Manufacturing of Ozone; Submerged Turbine or Paddle Mixers for Dispersion of Air, Carbon Dioxide or Ozone in Water, Waste Water or Sewage; Turbine or Paddle Mixers for Mixing or for Inducing Flocculation; Comminuters; Belt Type Sludge Dewatering Presses

Instruments-Namely, Rate of Flow Meters; Rate of Flow Controllers; Liquid Level Gauges, Pressure Gauges and Differential Pressure Gauges; System for Dispensing Chemicals or Their Solutions by Weight or Volume, Comprising Rotating Auger-Like Screws, Travelling Belts, Scales, Storage and Dilution Tanks, and Pumps; Signalling and Supervisory System for the Automatic Control of Water Treatment Systems, Comprising Switches, Indicating Lights, Electrical Relays, Time Switches, Programmable Controllers, Minicomputers and Panels and Boxes for Housing Them

Aerators for Water, Waste Water or Sewage; Filter Systems to Remove Suspended Materials, Oil or Other Contaminants from Water, and Parts Thereof; Solids Contact Reactors for the Clarification, Color Removal and/or Softening of Water; Ion Exchangers and Their Regeneration Systems; Reverse Osmosis Systems; Solids Contact Reactors for the Clarification, Softening, Phosphate Reduction, Metallic Ion Reduction, or Combinations Thereof of Water, Waste Water or Sewage; Screens Used in Water Purification; Clarifier Systems to Remove Suspended Materials by Sedimentation or Flotation or Combination of the Two, and Parts Thereof; Digester Systems for Wastewater or Sewage Sludges; Activated Sludge Treatment Systems; Grit Removers Employing Controlled Settling to Separate Grit from the Organics Carried by Wastewater or Sewage