| 摘要 |
<p>An apparatus for measuring light absorbance in a liquid sample which includes a light source (10) for directing light into a sample cell (20), a cylindrical sample cell, a light detector (60) for measuring intensity of light emitted from the cell (20) and focussing means for forming a tapered light beam to pass through the sample cell (20). The tapered light beam can be either a diverging beam or a converging beam through the cell (20). When the light beam is a diverging beam, a masking means (16) is positioned downstream of the cell (20) to assure that any light striking the cell wall is not directed to the light detector (60).</p> |
