A sprayer consisting of a handheld nozzle supplied from a pressurized reservoir that is carried on the back like a knapsack.
Example sentencesExamples
- It is applied as the water-soluble sodium salt Asulox by helicopter, ground-based vehicles or hand-operated knapsack sprayers.
- When spraying, it is advisable to use a knapsack sprayer.
- A manual knapsack sprayer was used for all spraying.
- Treat a circular area of 1 to 1.2 metres in diameter at the base of each tree using a knapsack sprayer, making sure to follow all instructions on the product label.
- Fire-fighting tools such as beaters and knapsack sprayers should be to hand and ready to use.