Abstract: A capillary transfer pipette includes a draw tube having a distal end defining a draw tube opening through which liquid is drawn via capillary action, a proximal end, and a lumen. A squeeze bulb is arranged proximally of the draw tube and defines a fluid chamber in fluid communication with the lumen, the squeeze bulb being compressible to dispense drawn liquid from the draw tube. An air vent hole is formed in at least one of the draw tube or the squeeze bulb, and is configured to vent air to facilitate drawing of liquid through the draw tube opening via capillary action. A volume indicating element may be provided on the draw tube, and the air vent hole may be located proximally of the volume indicating element. The lumen may be formed with a first diameter at the proximal end and a differing second diameter at the distal end. Methods of collecting liquid with, and of making, a capillary transfer pipette are also disclosed.

Abstract: A capillary transfer pipette includes a draw tube having a distal end defining a draw tube opening through which liquid is drawn via capillary action, a proximal end, and a lumen. A squeeze bulb is arranged proximally of the draw tube and defines a fluid chamber in fluid communication with the lumen, the squeeze bulb being compressible to dispense drawn liquid from the draw tube. An air vent hole is formed in at least one of the draw tube or the squeeze bulb, and is configured to vent air to facilitate drawing of liquid through the draw tube opening via capillary action. A volume indicating element may be provided on the draw tube, and the air vent hole may be located proximally of the volume indicating element. The lumen may be formed with a first diameter at the proximal end and a differing second diameter at the distal end. Methods of collecting liquid with, and of making, a capillary transfer pipette are also disclosed.

Abstract: A transfer pipette includes a draw tube, a first squeeze bulb, and a second squeeze bulb. The draw tube includes a proximal end, a distal end, and a lumen. The first squeeze bulb defines a first fluid chamber in fluid communication with the lumen at the proximal end, and the second squeeze bulb defines a second fluid chamber in fluid communication with the first fluid chamber. When the first squeeze bulb is squeezed into a compressed state, a volume of air is evacuated from the first fluid chamber. When the first squeeze bulb is released from the compressed state, an intended nominal volume of material is drawn into the draw tube through the distal end. When the second squeeze bulb is compressed, at least a portion of the intended nominal volume of material is dispensed from the draw tube through the distal end. Kits including the transfer pipette, and methods for transferring material with a transfer pipette are also disclosed.