The SP2 sprayer is the first patented no-leak piston pump sprayer on the market. Designed by Swissmex, the piston pump can reach pressures up to 180 psi with the ambidextrous pumping handle. The versatile SP2 sprayer can be used with pesticides, herbicides, liquid fertilizers, larvacides (liquid) for mosquito control plus lots more. The SP2 backpack sprayer can not be used for products such as wettable powders, solid, thick or granular materials.