| 摘要 |
<p>of the disclosure The invention relates to a procedure to establish the presence of allergen-containing housedust, as results when or after housedust mites occur, in which samples of dust present in buildings are thoroughly suspended in aqueous-alcoholic alkali metal hydroxide solution and, with the resulting extract, a color reaction using an aromatic diazo compound is carried out, the color reaction being evaluated in respect of its occurrence as an indication of the pollution of the dust with housedust mite residues.</p> |
