Contact Us

FlySorter, LLC is located to Seattle, WA. 

Our mailing address is:
125 NE 63rd St.
Seattle, WA 98115

Please send us a message using the form here or direct email inquiries to:

4900 9th Avenue Northwest
Seattle, WA, 98107
United States

Fly Dispenser and Counter


Fruit Fly Distribution at the Push of a Button

The Fly Dispenser uses soft foam rollers and a puff of air to dispense awake (non-anesthetized) adult fruit flies, one at a time, once every few seconds. Avoid the potential side effects of CO2 and human chemistry by dispensing flies directly into your assay.

The dispenser can also be configured to count the number of flies in each vial.


  • Load flies into 96 well plates for molecular analysis
  • Easily load individual flies into TriKinetics Drosophila Activity Monitor tubes
  • Introduce flies into C-trax behavioral arenas
  • Load flies into food vials for repeatable culturing conditions
  • Dispense a single fly, on demand, for dissection or imaging
  • Tally flies after behavioral assays
  • Count flies to assess fecundity

The Dispenser System:

The Fly Dispenser is a small, bench-top device with a base unit that holds the vial, and a dispenser pen where the flies come out.

There are three modes of operation:

  • Single Mode dispenses one fly each press of the button on the pen.
  • Vial Count Mode counts the number of flies in a vial as they are transferred to another vial.
  • Multiple Mode dispenses 2-10 flies each button press.

The Fly Dispenser is simple, easy to use, and comes with a 90-day guarantee.

DISPENSE FLIES in 3 Easy Steps: 

Count Mode:

To count flies in a vial:

  1. Attach the included silicone cap to a second vial
  2. Insert the dispenser end to the cap
  3. Switch to Vial Count mode
  4. Press the button to begin.

As flies are transferred to the second vial, the device keeps a precise tally.


  • Excels at loading experimental assays, including TriKinetics activity monitor vials
  • Easily incorporated into high-throughput systems
  • Reduce or eliminate anesthesia exposure for flies
  • Minimize possible interference of human chemistry
  • Increase accuracy and consistency
  • Pairs well with our Fly Storage and Fly Transport technology (coming soon)


Flies dispensed: Drosophila melanogaster, and other similarly sized flies.
Average time to dispense: Approximately 2-10 seconds, averaging 5 seconds per fly.
Dispenser end: Luer-lock fitting, 3 tips included.
Vials: Genesee Scientific wide vials. 5 polystyrene vials and 10 plugs included. Also available from Genesee in K-resin and polypropylene.
Device size: 10" W x 6" D x 7" H (250 mm W x 150 mm D x 180 mm H)
Approximately 5 lbs (2.25 kg) shipping weight
Connections: 12 V DC power (using supplied AC adapter), USB (cable not included), digital I/O with custom firmware
Customization: It is possible to customize the dispenser using the Arduino environment (prior electronics/programming experience recommended).


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