This almost blank spectrogram illustrates the reference lines required before a sample is subjected to the intense electrode heat which generates the spectrum lines.

The 2 parallel lines at right are aligned with the 2 brighter parallel lines. These 2 bright lines are actually sodium doublet lines that the electrodes generate, which serve as a standard reference for each individual element on the film, such as shown at right.

The above spectrum image at left appears blank because the metal/mineral sample has not yet been exposed to the heat of the electric arc of the electrodes. However, the electric arc has been initiated, which illuminates the films.

This is the tip of a copper coated carbon electrode. The center core area of the electrode contains sodium, which creates the 2 horizontal parallel reference lines when the electric arc is created.

This spectrogram is showing various spectrum lines (center) as the sample is being melted/vaporized. Several lines are generated in the center, but only 4 lines align to the lines at right (film). The video shows about 7 identifying lines for Osmium, which is only a portion of the total potential lines.

There are 2 films (left & right sides), each with various elements shown. In this particular case there is Os (Osmium) at right and Cs (Cesium) at left. However, the Cs doublet lines are not aligned with the bright sodium doublet lines in center. Therefore, Cs cannot be determined as to whether or not it is present.

16x – A fragment of 99.5 Osmium resting on a graphite pad.

22x – The Os is semi-melted. Osmium has such a high melting temperature it took awhile before the fragment began to liquefy.

8x – After intensive and prolonged heat from the electrodes these pieces of  Osmium remain only partially melted.
Os fumes MUST be ventilated away due to their toxic characteristics.