TDS Controller with Quick-Fit Connectors Suitable for 1/4″ RO Tube. It can be used in bye-pass connection of RO Membrane. This adds drops of non-RO water to RO filtered water hence Increase or Decrease the TDS Counts. This TDS adjuster is a compact and versatile device that helps regulate the total dissolved solids (TDS) levels in water systems. It features a durable plastic construction with a brass inlet, making it suitable for various applications. With its simple yet effective design, this adjuster allows you to control the mineral content and hardness of water, ensuring optimal performance of your equipment and appliances. Whether for residential or commercial use, this TDS adjuster offers a convenient solution for maintaining the desired water quality. Its compact size and easy installation make it a practical choice for seamless integration into your existing water system.