2. the degradability: biodegradable solution (H2SO4conc.: CuSO4) in a ratio of 10:1, V/W into a bottle of j. lada entry machine digests until the white smoke of SO3, continue to boil until transparent, then digested slurry. For the next 20-30 minutes, let cool off with distilled water, 300. ML and spotted by 35% of sodium hydroxide, 150. Ml, then bring to refining
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