Apparatus including a sample petter tube for obtaining reproducible liquid samples of small volume
US5084241A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 26, 1990 |
| Grant date | Jan 28, 1992 |
| Priority date | — |
| Expiry date | Jan 26, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/2575
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The disclosure teaches a pipette or petter tube and a system using the pipette to obtain reproducible liquid samples of known small volume. The pipette has an elongate body with one end adapted to be removably engaged by an aspiration device and the other end which is closed is adapted to contact a surface. The body has a spherical portion proximate the closed end. At least one aperture penetrates the wall of the spherical portion. When the petter tube is used in conjunction with a hollow tube having a known volume and of such size that the closed end of the pipette contacts the bottom of the tube a quantity of liquid can be aspirated from the tube leaving only a small predetermined volume behind.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.