Which statement regarding nozzle materials is incorrect?

The statement about plastic nozzles working well with all solvents is incorrect because not all solvents are compatible with plastic materials. Different types of plastics have specific resistance properties, and some solvents can degrade or damage certain plastics, leading to nozzle failure or contamination of the pesticides being applied. Therefore, it's essential to match the nozzle material with the solvents and pesticides to ensure durability and effectiveness.

The other statements accurately reflect the characteristics of their respective nozzle materials. Tungsten carbide nozzles are indeed known for their corrosion resistance, making them suitable for harsh chemical applications. Brass nozzles are generally avoided for use with fertilizers due to the risk of corrosion from the chemicals present in some fertilizers. Aluminum nozzles are commonly recognized for being economical, making them an affordable choice for many applicators.