Automatic filling micropipette with dispensing means
First Claim
1. An automatic filling micropipette comprising a tubular body having a closed end, an open end having an opening of a selected diameter and a sidewall extending therebetween, the tubular body having an inner diameter sized to permit liquid to flow into the tubular body by capillary action, at least a portion of the tubular body being flexible, and the sidewall having an aperture therethrough, the aperture having a diameter smaller than the diameter of the open end and being positioned to allow air to escape from the tubular body only until a volume of liquid has entered the tubular body.
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Accused Products
Abstract
An automatic filling micropipette is formed from a tubular body having an open end, and being closed or having a piston at an opposite end. The tubular body is sized to permit liquid to flow into the tubular body by capillary action. An aperture is provided in the sidewall, the aperture having a diameter smaller than the diameter of the open end.
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Citations
18 Claims
- 1. An automatic filling micropipette comprising a tubular body having a closed end, an open end having an opening of a selected diameter and a sidewall extending therebetween, the tubular body having an inner diameter sized to permit liquid to flow into the tubular body by capillary action, at least a portion of the tubular body being flexible, and the sidewall having an aperture therethrough, the aperture having a diameter smaller than the diameter of the open end and being positioned to allow air to escape from the tubular body only until a volume of liquid has entered the tubular body.
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9. An automatic filling micropipette comprising
a. a sample collection tube having an open distal end of a selected diameter, an open proximal end, and a sidewall extending therebetween, the sample collection tube having an inner diameter sized to permit liquid to flow into the sample collection tube by capillary action, and the sidewall having an aperture therethrough, the aperture having a diameter smaller than the diameter of the distal end and being positioned to allow air to escape from the tubular body only until a volume of liquid has entered the tubular body; - and
b. a piston inserted into the sample collection tube through the proximal end. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification