We have made several seal piercing heads for
Robotics Companies as well as hand operated devices for other groups. The bevel
pins we use to pierce the sealing tape have a distinct advantage over other
methods of piercing the seal. The bevel pins produce a cut in the sealing tape
that looks like a "C." The flap at the open end of the "C"
acts like a hinge. When pipette tips poke into the opening, the flap bends
when the pipette tip is removed the flap bends up and closes the hole.
This phenomena does not happen with aluminum foil sealing tape as the flap
remains pushed down.
We make the piercing heads in both 96 and
384 formats using 2.00 mm diameter bevel pins and we can make custom bevel pins in different diameters depending upon
Each of the piercing heads incorporates a spring loaded
"Stripper Plate" to extract the pins from the sealing tape. This
prevents the sealing tape from being removed from the plate when the pins are
removed from the sealing tape.
The VP 410E Piercing Head to the right has 192 bevel pins and was designed to pierce
384 well sealed microplates using two passes. This has the advantage
of reducing the amount of force required to pierce the sealing tape by half.