The use of adding irrigation water with saline solutions or, in any case, with plant essential nutrients is becoming increasingly popular. Fert-irrigation is spreading more and more in the agricultural areas of industrialized countries. Having to add the chemical products to the irrigation water, high-flow metering pumps are often required. Dosing systems are now also present in greenhouses and hydroponic crops, where it’s commonly required to use measuring and control instruments and proportional-flow metering pumps for high precision dosing.