1. White kuwala acicular crystalline ufa, wowawasa kukoma ndi moto kutengeka. Nthunzi wake ndi wachikasu-wobiriwira, ndi kukoma kokoma, wosasunthika pakuwala ndi kutentha, ndi hygroscopic. Imakoma wowawasa ndipo imakhala ndi kutentha. Ndi oxidizing, ndipo selenium monomer adzakhala mpweya akakumana organic kuchepetsa wothandizila. chakupha.
2. Mosavuta kuchepetsedwa kukhala selenium.
3. Gwiritsani ntchito zida zodzitetezera panthawi yogwira ntchito. Samalani nthawi zambiri kuti muwone kuchuluka kwa selenium mumlengalenga. Yang'anani thupi lanu nthawi zonse. Perekani zakudya zokhala ndi mapuloteni ndi amino acid.
4. Kukhazikika kwa mpweya ndi chinyezi. Popeza ndi poizoni kwambiri, tikulimbikitsidwa kuti tigwire ndikugwiritsa ntchito mosamala mu fume hood.
