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Halmovy window

A hole in the furnace through which floats are introduced

Halmosa (Foam)

The layer of bubbles on the surface of the glass

Free process (cylindrical method)

A method of producing flat glass in which a freebie (cylinder) is formed from a portion of glass melt by blowing, which is then cut lengthwise, again heated and smoothed in a furnace

Chemical laboratory glass

Glass with high chemical and thermal stability, suitable for processing on a glass blower; used in the manufacture of chemical laboratory glassware, instruments and apparatus of the chemical industry

Chemical durability

Resistance to glass chemical attack of various reagents

Cold glass

Glass that is processed at room temperature

Chrome glass

A kind of stained glass opal glass green, stained with chromium oxides

Crystal glass (lead glass, crystal)

Colorless glass with a high degree of transparency, containing a significant amount of lead oxide

Art glass

Stained-glass windows, smalt mosaics, art vessels, architectural details, decorative compositions, sculptures (small forms), lamps, artificial jewels (jewelry)