Water meters and pressure water regulators for the treatment of liquids; electrical controller mechanisms and level indicators, pressure, flow and concentration measuring apparatus; level, pressure and rotation regulators for use in water, waste water, environmental, pulp and paper plant installations; electric circuits for processing signals in analogue form, pulse and function converters; material and apparatus for taking specimens, namely, water sampling apparatus and material, waste water...

Regulatory and Safety Instruments for Use with Water Purification Apparatus-Namely, Water Level, Flow and Pressure Indicators, Water Level and Pressure Regulators, Turbidity and Sludge Indicators, Purification Control Apparatus, Electronic and Mechanical Pointers, Recorders and Counters, Water Sampling Instruments and Water Testing Instruments