How To Use A Knapsack Sprayer
You will need:
- Knapsack sprayer
- Clean water
- Chemical jug
- Liquid fertiliser/herbicide/fungicide
- Correct PPE (overalls, rubber boots, chemical resistant gloves & face shield)
What is a Knapsack Sprayer?
A knapsack is a type of sprayer that disperses liquid through a hand-held nozzle that is attached to a pressurised reservoir carried on the operators back. Knapsack sprayers can be used to apply liquids such as fertilisers, herbicides and fungicides for example and is suited to spot treating areas.
- Assemble your sprayer (if new) following the manufactures instructions.
- Ensure you are fully prepared with the appropriate PPE (Personal Protective Equipment) including rubber boots, coveralls, gloves and a face shield.
- Ensure the sprayer is calibrated to the required dosage – see our guide on How To Calibrate a Sprayer.
- Fill the spray tank with the required amount of water, we recommend always reading and following the manufacturers label and instructions before use and using the rate suggested.
- Measure the chemical needed in a mixing jug in a safe environment. If the chemical container is new and is sealed with a foil, simply turn the cap upside down, press onto the foil seal and twist to remove.
- Add chemical into the sprayer with the water. We recommend not mixing more than what is needed.
- Triple rinse the measuring jug.
- Agitate the sprayer to make sure the liquid is fully mixed.
- Now you are ready to spray. Put the sprayer on your back and adjust until comfy.