Photoelectric flame photometer

[1][2] A photoelectric flame photometer is an instrument used in inorganic chemical analysis to determine the concentration of certain metal ions, among them sodium, potassium, lithium, and calcium.

The intensity of the color will depend on the energy that had been absorbed by the atoms that was sufficient to vaporise them.

Filters select which colours the photometer detects and exclude the influence of other ions.

Before use, the device requires calibration with a series of standard solutions of the ion to be tested.

Its status is similar to that of the colorimeter (which uses filters) compared to the spectrophotometer (which uses a monochromator).