The KNOSYS gustometer provides a simple method to deliver 8 different sapid substances to the liquid delivery tube is made of eight stainless steel mini tubes jacketed into a larger stainless tube. Spaces between tubes are filled with a cured epoxy resin.
Each mini tube is connected to a reservoir via a normally closed solenoid pinch valve. By adjusting the height of the reservoir and opening time of the solenoid, reliable delivery of small volumes (2 - 100 ul) can be achieved.
The complete unit consists of one 8-channel drink tube, 8 pinch valve control solenoids and liquid reservoirs, KNOSYS operant chamber, KNOSYS digital interface, KNOSYS constant voltage shock unit (for optional punishment of incorrect responses) and a complete software package for taste detection and discrimination training.