Paragraph 4 REAGENTS
Dilute hydrochloric acid (HCl) solution, about 0.5 M:
4.1
Mix 1 volume of hydrochloric acid (ρ = 1.18 g/ml) with 20 volumes of water.
4.2
Hydrogen peroxide solution (30% H2O2 ρ = 1.11 g/ml), free from trace elements.
Dilute hydrochloric acid (HCl) solution, about 0.5 M:
Mix 1 volume of hydrochloric acid (ρ = 1.18 g/ml) with 20 volumes of water.
Hydrogen peroxide solution (30% H2O2 ρ = 1.11 g/ml), free from trace elements.