English: Images obtained by gas discharge visualization of liquid object at different voltages applied to the salt NaCl. A series of experiments maked for finding the effect of NaCl salt concentration on the character image. In the experiments, the applied voltage increased in steps of 500 V at a frequency of 40 kHz, and NaCl salt concentration increased in increments of 5 g / l. The first experiment was maked with normal pooled water from the water supply system of the town. Then the water was added to the salt NaCl. Horizontal - storyboard increments of 500 V, and vertically - increasing concentration of NaCl in increments of 5 g / l. The results show that the character of the liquid object glow can be judged on its salinity (impurity content). Experiments have shown that the intensity of glow tape streamers increases with increasing concentrations of NaCl. At high concentrations, the glow was so intense that camera cannot make photo. Determined that increasing concentrations of NaCl streamers radiation intensity increases, but the streamers are lit at higher voltages, which can also be used to determine the concentration of NaCl. Wave length of light of streamers depending on concentrations did not change significantly.