Kjeldahl Glass

Due to the thermal stability of glass is a suitable material for the manufacture of glassware. In when its chemical or thermal stability is not enough, use utensils made of other materials. For general-purpose dishes include test tubes, beakers, flasks, retorts, watering cans, molds, refrigerators, tees, valves, special purpose vehicles Kipp, Soxhlet, Kjeldahl, a glass of Wolf, Drexel, reflux, with a round bottom flask, special refrigerators, devices for determining the boiling point, melting point, molecular weight. At the moment most relevant in the laboratory is a laboratory glassware, which can be transparent or opaque, colorless or colored, luminescent under the influence, for example, UV-and g-radiation, or skip to absorb ultraviolet rays, etc. The most widely used inorganic crystal, characterized by high mechanical thermal, chemical, etc. properties.

Measuring utensils designed to measure liquid volume. By measuring utensils include burettes, volumetric flasks, pipettes, measuring cylinders, beakers and graduated test tubes. It is also very widespread received laboratory glassware, plastic, because plastic is very convenient and practical, but at the same volume of such dishes are much lower than the glass. Labware made of porcelain has a greater heat resistance (up to 1300 OS) and mechanical strength than glass. Thin-walled porcelain can withstand sudden changes in temperature, it can be done sintering materials on a gas burner, in a muffle furnace, evaporation on a sand bath. Industry produces porcelain cups, vyparitelnye cups, mugs, mortars, crucibles. Any dish sooner or later have to wash dishes in the laboratory and this is no exception. Mechanical and physical methods cleaning utensils.