Preparation of barium peroxide
into a glass tube (silica glass is ideal because of its high melting point) place a ceramic boat with barium oxide. Tube begins to heat gas burner (good to use multiple burners at once) at the pumps nesvítivým flame to red heat of 500 ° C. At the same time to introduce the air flow tube (use a vacuum pump). The air velocity is chosen 30 to 50 bubbles per minute. Warmed 2-3 hours. After cooling apparatus odically remove and store the resulting barium peroxide to prachovnice.
bubbler with 30% NaOH and conc. sulfuric acid is used to detect carbon dioxide and moisture.