The article presents the results of the investigation which studied the influence of impulse magnetic fields on structural changes in industrial colorless glasses with the help of section etching. Regimes of treatment include: temperature - between 300 and 600 °C, vector's magnitude of the magnetic induction - up to 0.15 T, duration - between 1 and 600 s. Analysis of structural changes in glasses is made with the help of section etching of solution HF. During one etching a layer of 0.05-10 μm is dissolved. Concentrations of Na⁺, K⁺, Ca⁺ is determined in extracts after etching. Compactness of flat glass structure changes after thermomagnetic treatment. A 5-15 % decrease of dissolution rate of glass surface layers shows it. It is complicated to interprete the results obtained because of the stratified structure of glass. The tickness of the separate layers makes small parts of μm. Analysis of changes in the compactness of glass structure is made depending on the type of magnetic field and its parameters, temperature and duration of treatment magnetic.