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Agserv droplets aren't droplets
Droplets from spray nozzles come in a wide range of sizes and equipment can produce different types of droplets for various applications. Understanding droplet size is important for effective chemical application. Nozzle selection and setup can minimize driftable droplets. Different types of spray equipment and nozzles are used for surface, soil, and space applications and produce droplets in the mist, fog, aerosol or foam ranges to effectively deliver chemicals for pest control.
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Agserv droplets aren't droplets
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- 2. Droplets aint droplets. •Understanding droplet size. • Different methods of application. – Equipment – Nozzles • Getting the best from you chemicals through correct application.
- 3. Understanding droplet size. Measure •Microns (μm) (micrometers). One micron equals 0.001 mm. • Droplet size is diameter of individual droplet • Droplet spectrum is the distribution of droplets from a devise or nozzle to form classes
- 4. Equipment Types of application Surface/Soil 1.Fine surface spray 2. Surface spray 3. Flooding 4. Foaming Space 1. Fog 2. ULV 3. Mist 4. Aerosol
- 5. • Thermal fogging,smoke generation • Around 10 Micron Thermal foggers: uses high temperatures to produce large quantities of fog without degrading the active ingredient. Thermal foggers produce a very large quantity of very small droplets, very quickly. 1. Fog
- 7. 2. ULV Ultra lowvolume (ULV) fogging machines • Fogging machines that use large volumes of air at low pressures to transform liquid into droplets that are dispersed into the atmosphere. • This type of fogging machine can produce extremely small droplets with diameters ranging from 1-50 µm. • True ULV less than 50 µm • ULV often confused with misting • Application: Mosquito control, Bird Control, Midges & other flying insects. Cyclone from Dyna Fog LR 18 Longray
- 8. 3. Mist • Mistingor cold fogging • Droplet size 20 -150 µm • Very common in PCO Dynafog Hurricane Fogmaster TrijetLongray 2680
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- 10. Aerosol • Invented 75years ago by Eric Rotheim • Took off in WW2 • 1st in Australia Mortein in 1950 • 0.1 to 50 µm • CFC banned Jan 1996 (chlorofluorocarbon) Aerosol Applicators • B&G BOC – Pestigas • High-pressure (5,000kPa) Aerosol spray (droplets range 2-20µ). Non-flammable, liquid CO2 4. Aerosol
- 11. Actisol® Compact UnitB&G- Portable Aerosol System 4. Aerosol
- 12. The influence ofdroplet size Increased coverage = Increase efficacy Turf Jet Turbo Teejet XR Flat fan
- 13. Surface Spray 1. Finesurface spray – Back pack mister – Fine nozzle 2. Surface spray – Traditional pressure sprayer – Truck mount, hand hose
- 14. Back pack mister •Fast to apply • Very even fine application • Drift issue • 11.5 M throw • Huge range of droplet size • Droplet sheer NB: Label states surface spray only
- 15. Patterns SSSS 1.SSS. a.SSS These classes (veryfine, fine, medium, coarse, very coarse, and extremely coarse)
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- 17. Minimising Drift 34% driftabledroplets 12% driftable droplets <1% driftable droplets <1% driftable droplets
- 18. Nozzle Selection •There aremany types of nozzles – Flat Fan Standard – Flat Fan - Drift Reduction – Anvil – Hollow Cone – Full Cone – Double Outlet – Off Centre – Twin Fluid – Banding (or Evenspray)
- 19. 5. Foaming • Mixwater & air with a foaming agent (Detergent) you get foam • More air dryer foam • Thorough surface application in the long run.
- 20. • Versafoamer HHcan be used to apply foam to wall voids…
- 21. 4. Flooding &Injecting