Soilni Olsen fosforini tahlil qilishning UNE 77324 standartiga muvofiq usuli quyidagicha: 1. Soil namunasini olish: Soil namunasini havoga quritish va 2 mmlik siynadan o'tgunga qadar maydalash. Kamida 500 gramm tuproqdan vakillik namunasini olish kerak. 2. Kerakli reagentlar va uskunalar: - 0,5 N ga sulfat kislota (H2SO4) - 1 M ga ammonium sulfat (NH4) sulfat (NH2) sulfat (NaHCO3) 1 M ga sodiy bikarbonat (NaHCO3) 0,5 M ga eritma - 0,1 N ga xlorid kislota (HCl) eritma - 0.1 N ga kalsium (CaCl2) 0.01 M ga - Kvantit filtr qog'ozi - 100 ml matrit sulfat (CaCl2) - 100 ml magnit sul
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