The estimation of the Alkali metals by Flame Photometry (e.g. Sodium determination in Foods, Sodium and Potassium determination in Cement), is by far the most important application of Flame Photometers in routine chemical analysis. For this widespread requirement, low temperature Flame Photometers still provide the most reliable and convenient procedure available. Flame Photometry also has considerable appeal in the clinical chemistry field as it provides a rapid and reliable means of estimating Sodium, Potassium and Lithium in body fluids. The methodologies of such analyses are well known and established.

By forcing enough air through a bed of particles, the particle bed may assume a fluid-like state (resembling a boiling liquid). Heating the incoming air and managing air flow rate through the sample, the Model 501 Fluid Bed Dryer provides thorough mixing and maximum contact of solid with moving air.