Dispenser is an innovative matrix or array dispenser incorporating a common
flat chamber with an array of small pockets (wells) that have calibrated
openings in the middle of each pocket. A special flat hydrophilic “sponge”,
which carries the reagent, is placed above the pockets. A membrane then
covers the sponge. The entire chamber, including the sponge and the membrane
is sealed from the top by another cover creating a hermetic space between
the top cover and the membrane covering the sponge.
A pulse of
pressurized air presses the membraned sponge against all pockets, evenly
distributing the reagent into individual pockets. Further pressurization of
the membrane forces the entire amount of liquid from each pocket to be
dispensed through the small openings.
The sponge can be drawn automatically into the space between the top cover
and the bottom dispensing plate and can be pre-filled with reagents as a
disposable (or reusable) component.
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