During the measurement the fluid was sucked out simultaneously by the two jets with an organized
system of two syringes controlled by a computer. One of the nozzles was mounted on a movable arm
connected to the torque meter of unique structure delivered by the Roman Pomianowski Laboratory of
Electronics (Poland). In measurements three different nozzles with 1, 2 and 3 mm diameter were used.
The apparent extensional rates were in the range from 0.9 to 1019 s-1.