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Under the influence of oxygen, which is liberated through the degradation of hydrogen peroxide, the barley kernels emerge from dormancy. In this way, germination can be induced at any given time.

The quantitative determination is carried out in a sulphuric acid solution by titration with potassium permanganate:

5 H₂0₂ +  2  KMnO₄ + 3  H₂S0₄  →  2 MnSO₄ + H₂S0₄ + 8 H₂0 + 5 0₂

If the sample contains other peroxide-containing disinfectants in addition to hydrogen peroxide (H₂O₂), the method T-754-01-032 Peracetic-acid-based-disinfectants must be used.

Hydrogen peroxide oxidizes iodide to iodine, which is reduced by sodium thiosulfate (Na₂S₂O₃) and recalculated as hydrogen peroxide.

If the sample contains other peroxide-containing disinfectants in addition to hydrogen peroxide (H₂O₂), the method T-757-01-032 Peracetic-acid-based-disinfectants must be used.

In addition to peracetic acid (C₂H₄O₅), hydrogen peroxide (H₂O₂) is always present in disinfectants, so that both components must be determined together. The quantitative determination of hydrogen peroxide is carried out as described under T-753.01.032 Disinfectants-containing-hydrogen-peroxide-potassium-permanganate-method or T-753.02.032Disinfectants containing hydrogen peroxide - sodium thiosulphate method. The peracetic acid is determined iodometrically: