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Tests & Results



Spray Deposits on Raised 2cm discs from Conventional “Fine” and Bubble Jet/Easy Jet Applications in Three Wind Speeds.


Spray Deposits: ul.disc.100 l.ha emitted

Wind Speeds: graph

Wind Speeds: miles per hour (MPH)



Downward Fallout and Airborne Drift from Conventional “Fine” Spraying and Bubble Jet/Easy Jet 02 Applications in a 5 mph Wind.


Volumes of “lost” spray: % of emission

Drift information

Airborne %, Fallout %

Advantages of the Twin Cap

Twin cap for air bubble jet nozzles
  • Excellent spray coverage from front and rear jets

  • Increased crop penetration and coverage

  • Ensures maximum coverage (droplets per square inch) for increased effectiveness of fungicide and insecticide control

  • Easy assembly with Air Bubble Jets/Easy Jets

  • They reduce the number of very small droplets – these are the ones which cause drift.

  • They create pockets of air in the droplets that on contact with the leaf collapse dispersing the liquid evenly.

With the twin cap you can use 2 – 5 gal. nozzles rather than 1 – 10 gal. nozzle. The advantage is you get over twice as many droplets per sq. inch for superior coverage. Air Bubble jet/East Jet nozzles operate best between 20-60psi and have an overall range of 20 – 90 psi. They can be used to apply fungicides, insecticides and herbicides to any crop including potatoes and pulse crops.


Air Bubble Jets/Easy Jets are a proven effective spray tip that has been in use worldwide since 1997. They are made in England.


With conventional nozzles, 15 – 20% of the droplets produced are driftable (under 200 micron in size). That’s 15 – 20% of the chemical blowing away…Air Bubble Jets/Easy Jets are less than 2%.


PWM users, yes, we have one for you too.


Droplets produced range from 200 – 550 micron in size.

Consistent sizing equals superior coverage. The average droplet size – 350 micron.


Other drift reducing nozzles produce a much coarser spray pattern with a large percentage of droplets over 600 microns in size (these are the ones that run off the leaf because they are too heavy).


Air Bubble Jets/Easy Jets operate at best between 40-60 psi. pressure. They DO NOT require high pressure (60 – 100 psi) as most induction type nozzles do.


Ag Canada as well as other researchers in North America and Europe have tested over the years to find that with all chemicals the Air Bubble Jet/Easy Jet will provide as good and in most cases better efficacy as a conventional nozzle.

Application Rates

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Image by Ricardo Gomez Angel

Download our Application Rate Spreadsheet. Included: Valuable information in US Gallon measurements.

Conventional Sprayers
PWM System

How They Work

The Air Bubble Jet/Easy Jet consistently produces droplets that are 200 – 550 microns in size. Too big to drift – too small to run off.


Drift occurs when droplets are smaller than 200 microns. Standard sprayer nozzles drift because they produce droplets that are 50 – 300 microns in size. With a droplet range of 200 – 550 microns the Air Bubble Jet/Easy Jet has 90% less drift than standard nozzles. Run off occurs with big droplets – 600 microns and over.


Depending on the manufacturer, other low drift nozzles produce droplets that range in size from 250 to 1000 microns – that is why run off can be a problem. With a droplet size of 200 – 550 microns your chemical stays on the plant when applied with the Air Bubble Jet/Easy Jet.


The liquid being sprayed passes through a removable tapered nozzle A which accelerates the liquid and projects the flow into the tapered mouth of the venturi B.


This creates a vacuum which causes air to be sucked in through the two slots marked C. The mixture of air and liquid is compressed as it passes through the mixing chamber D and is then sprayed through a fan nozzle E.


See our Frequently Asked Questions page for more information.

Image by Henry Be
Drop size information

An important factor: every time you can change a droplets diameter by 1/2 it's size by a uniform nozzle  (700 microns to 350 microns) you gain eight droplets or more coverage and reduce run off (Loss of product on target).


The surface area of the one large droplet is four times that of one small droplet, but the total surface are of the eight smaller droplets is twice that of the larger droplet. True enough, large droplets may have less visible drift, but what is it costing you?

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