Patent ID: 6916372

Claim:
A microfluidic method comprising: taking a microfluidic device comprising a substrate, and a plurality of microvolumes at least partially defined by the substrate, each microvolume comprising a first and a second submicrovolume where the first and second submicrovolumes are in fluid communication with each other when the device is rotated about a rotational axis of the device; and forming a plurality of crystallization experiments within the device where the crystallization experiments are formed, at least in part, by adding fluid to a plurality of the first submicrovolumes; and rotating the device about the rotational axis of the device to cause fluid in the first submicrovolumes to be transferred to the second submicrovolumes; wherein the volume of fluid delivered from the first submicrovolume to the second microvolume of a given microvolume upon rotation of the device is within 25% of the other microvolumes when a same volume of fluid is added to the different first submicrovolumes.