A manual sprayer is a hand-operated spraying device used for applying water, pesticides, herbicides, disinfectants, fertilizers, and other liquid solutions in agriculture, horticulture, landscaping, and sanitation. It typically consists of a durable plastic or stainless-steel tank, a hand pump for generating pressure, a flexible hose, a spray lance with an adjustable nozzle, a trigger valve, and carrying straps for backpack models. The sprayer is designed to produce a controlled and uniform spray pattern, allowing efficient coverage of plants, crops, and surfaces while minimizing chemical wastage.

Operation:
To operate a manual sprayer, the tank is filled with the recommended liquid solution and securely closed. The hand pump is used to build pressure inside the tank, after which the trigger valve is pressed to release the liquid through the nozzle as a fine spray. The nozzle can be adjusted to produce different spray patterns depending on the application. During use, pressure is maintained by occasional pumping. After spraying, any remaining solution is emptied, the tank and components are thoroughly rinsed with clean water, and the sprayer is stored in a dry place. Appropriate personal protective equipment, such as gloves, goggles, and a face mask, should be worn when handling chemicals.