An interesting post JaSa.
Q.E.D.
Sorry, couldn't help myself. For those of you who did not experience or have forgotten late secondary school mathematics Q.E.D. is an acronym for the Latin Quod Erat Demonstrandum. Very roughly translated means thus it has been demonstrated or as we were told all those years ago at school all that was set out to prove has been proved. Seems to be appropriate here.
I'd be interested to know how old your earlier batch of powder was. My tin, yes it is in a tin, is lot MEN 3689 Packed 0100. On the top the tin is stamped APP 98 which may indicate 1998 or may not. The tin and label style is that shown on the ADI 2000 printed Guide.
Regards Grandpamac.
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