Work to compare performance to eliminate the rust by plant extracts is intended to compare the ability to eliminate rust with parsley extracts. Piper sarmentosum vegetables and spinach, which contains Oxalic acid, or the acid bites the rust is leading with the highest average weight of Tapu Tapu Tapu by 0.27 g/1 hard to soak in water to cause rust, and soaking in the plant extracts include: parsley. Piper sarmentosum vegetables and spinach (4 g concentration/cm ³) is 24 hours and found that the extract to get rid of the rust, has a descending sort is to extract parsley. Piper sarmentosum vegetables and spinach by weight of nails rust lost 0.07 0.08 0.09 g g and g, respectively.
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