Change storage tank maybe it's unwashed storage tank bad smells if bad smells persist then use formaldehyde ihope it's bad odour go away
@EngineerAMANAUEL It may be contaminated with microbes. Is your preservative strong enough?What was in the unwashed tank?
Good manufacturing practices would ultimately dictate that you discard the entire batch. There really is no way around that. Some mistakes are costly.
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