Tyndall meter

Tyndall Meter—The Tyndall meter is a device developed by Tolman and Vliet (1919) for measuring the intensity of a Tyndall beam. The apparatus is shown in Figure 54 and consists of a central cell which contains the suspension to be measured. This is illuminated by a light beam whose intensity has been standardized. This beam of light passes through the cell. The intensity of the resulting Tyndall beam in the cell is measured by means of a photoelectric meter, or an illuminometer. Several variations of the Tyndall meter are possible, as follows ... 

---