Liquid transfer device

Details Liquid transfer device Liquid transfer device

B - Operations, Transporting

01

L

23/433

B01L 3/00 (2006.01) B01L 3/02 (2006.01) G01N 35/00 (2006.01)

Patent

CA 1204277

LIQUID TRANSFER DEVICE ABSTRACT OF THE DISCLOSURE The liquid transfer device includes a one piece molded barrel plate 12 having a plurality of syringe- type barrels 16 extending downwardly therefrom and a support flange 20 extending downwardly about the perimeter of the barrel plate. An elastic membrane 30 rests on and is substantially coextensive with the upper surface of the barrel plate. A retaining plate 32 having a plurality of apertures 35 in align- ment with the respective barrels is detachably mounted on the barrel plate in either a first position wherein annular projections 38 about each aperture lightly engage the membrane to hold it in place or a second position wherein the projections extend into each barrel to seal the membrane about the upper edge of each barrel. A plunger 50 having a plurality of pins 52 is placed on the retaining plate with the pins extending through the apertures to engage the mem- brane. Depressing and releasing the plunger will draw a predetermined amount of liquid into each barrel. The barrel plate, membrane and retaining plate can be packaged with or without a plunger as a sterile liquid transfer device.

425837

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