A small amount of ferric oxide is added to a solution of oxalic acid, a commonly used cleaning and bleaching agent. Once the rust is dissolved, potassium carbonate is slowly added to the solution ...
Most meat alternatives, like tofu, are made from beans and pulses, which guinea pigs can't eat either. Rhubarb plants contain oxalic acid, which, when it encounters calcium in the guinea pig's system, ...
High levels of glucose, albumin, ascorbic acid, tetracycline or cephalexin, or large amounts of oxalic acid, may inhibit the reaction and lead to false-negative results. Vaginal contamination can ...