Photoelectric flame photometer

A photoelectric flame photometer is a device used in inorganic chemical analysis to determine the concentration of certain metal ions.

Additional recommended knowledge

Guide to balance cleaning: 8 simple steps

Recognize and detect the effects of electrostatic charges on your balance

Better weighing performance in 6 easy steps

In principle, it is a controlled flame test with the intensity of the flame colour quantified by photoelectric circuitry. The sample is introduced to the flame at a constant rate. 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.

Flame photometry is crude but cheap compared to flame emission spectroscopy, where the emitted light is analysed with a monochromator. Its status is similar to that of the colorimeter (which uses filters) compared to the spectrophotometer (which uses a monochromator).