DEVICES AND METHODS FOR MEASUREMENT OF LIQUID VOLUMES

摘要

Methods and devices for measuring the volume of a liquid sample transferred from a source to a destination by means of incremental dispensing of the sample into a destination vessel or by means of decremental aspiration of the sample from a source vessel, where the liquid sample is collected from a liquid having known optical absorbance at a known wavelength or within a defined part of the electromagnetic spectrum. The absorbance of the sample is measured by exposing the source or destination vessel to electromagnetic radiation before and after the transfer, and the liquid volume is determined on the basis of differential measurements of absorbance of the source or destination vessel.