| 摘要 |
A self contained dispensing head apparatus (10) wherein a modified pipette tip box tray carrier (22) is utilized to furnish pipette tips (20), carried in a standard pipette tip box (18), by a pipette tip box tray carrier to the head apparatus and wherein means are provided to engage the pipette tip box tray carrier in a manner whereby the pipette tips are loaded into corresponding internal cylinders (13) formed in the dispense block head (26). The dispense block head comprises a solid block of material having a plurality of internal cylinders to engage the pipette tips in a sealing arrangement. The pipettes are modified from the conventional design in that a disk shaped ring portion is interposed adjacent one end of the pipette tip, a tapered end of the tip allowing a seal to be formed with the dispense block head internal cylinders.
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