| 摘要 |
A particle size distribution analysis apparatus wherein there are provided a sample measurement zone (16) adapted to contain a sample of particles, a light emitting means (2,42) adapted to provide a source of light incident upon the measurement zone (16), and a detection means (22,40) adapted to measure light levels at different scattering angles and to output signals to a computation means, enabling the size of particles contained within the sample to be determined, wherein the light emitting means (2,42) comprises a first light source (2) emitting a substantially monochromatic first wavelength of light and a second light source (42) emitting a substantially monochromatic second, different, wavelength of light. To be accompanied, when published, by Figure 4 of the drawings. <IMAGE> |
