Hi everyone, hope the best for all of you

Going over a veterinary university thesis found honey samples with PPB
traces of antibiotics. Can't go back to specific beekeeper to ask if they
applied something, but wonder if the amount "PPB" is already and indication
of a crosscontamination, say by those antibiotics applied to flowers?

I will expect a PPM mark if the antibiotic was applied directly to the
colonies, isn't it? Any thoughts? Any data?

And yes, there is an antibiotic drymix allowed for spraying at least at
Chile StreptoPlus
https://www.anasac.cl/agropecuario/productos/strepto-plus/

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