Magnetic particle washing apparatus and method

摘要

Methods and apparatus are adapted to wash magnetic particles isolated in a vessel. The methods include providing a vessel with wash liquid and a layer of magnetic particles, providing a probe having aspiration capability, positioning a probe tip above the layer of magnetic particles, aspirating at least some of the wash liquid above the layer, positioning the probe tip below the layer, and aspirating at least some of the wash liquid from below the layer of magnetic particles. The suction may be turned off as the probe tip descends past the layer. A novel magnetic particle washing apparatus are disclosed.

主权项

1. A method of washing magnetic particles, comprising:
providing a vessel with wash liquid and a layer of magnetic particles; providing a probe having aspiration capability; positioning a probe tip of the probe above the layer of magnetic particles; aspirating at least some of the wash liquid above the layer of magnetic particles; passing the probe tip past the layer of magnetic particles with suction to the probe turned off; positioning the probe tip below the layer of magnetic particles; and aspirating at least some of the wash liquid from below the layer of magnetic particles.