WPI MICRO-ePUMP, Instruction Manual

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24 World Precision Instruments
APPENDIX A: DROPLET VOLUME
Use the chart below to gauge the volume of a droplet and the table to determine the
volume a micropipette can hold.
1 mL =
1 cm
1.24 cm
100 µL =
4.64 mm
5.76 mm
10 µL =
2.15 mm
2.67 mm
1 µL =
1 mm
1.24 mm
100 nL =
464 µm
575.36 µm
10 nL =
215 µm
267 µm
1 nL =
100 µm
1.24 µm
100 pL =
46 µm
57 µm
10 pL =
21.5 µm
27 µm
1 pL =
10 µm
12.4 µm
Fig. 37—This graph compares the dimensions of a cube and a sphere with the same
internal volume.
Volume of a Micropipette
OD ID Approx. Volume/inch
1.0 mm 0.58 mm 6.7 µL/in
1.2 mm 0.68 mm 9.2 µL/in
1.0 mm 0.75 mm 11.2 µL/in
1.5 mm 0.84 mm 14.1 µL/in
1.2 mm 0.90 mm 16.2 µL/in
1.5 mm 1.12 mm 25 µL/in
2.0 mm 1.12 mm 25 µL/in