Check the listing for details. Fertilizer Injector Dispenser 0.4-4% Chemical Injector Proportioner Water-driven. Color: blue+black, Condition: New. Listed at 104.79 USD. Contact seller to get English manual, Please ! Name:Fertilizer Injector Dispenser Specifications Color:blue+black Scale Range:0.4%-4% Flow Range:20-2500 L/h Water Temperature:4℃-30℃ Working Water Pressure:0.2-3 kg force Inlet And Outlet Caliber:32mm/25mm Features -Proportional injection device installed in the water supply pipe, no electric drive to water pressure for power. -After installation, do not need to watch, you are free to busy other things. -No matter what happens to the flow and pressure of the flow, the dose of the solution is always strictly proportional to the amount of water entering the equipment. -Precise ratio setting is not affected by water flow. -Pumps are resistant to corrosion. Package Included 1 x Fertilizer Injector Dispenser 1 x Tube 4 x Accessories.