I'd suggest leaving the e tester at home, so that they won't search for the thousands of pills that you might be carrying ;-)
heheh - if you're not carrying, then there's probably no problem in carting a tester, sure, they might ask you questions... but apart from that, there's no illegality in carrying the thing.
Just make sure that it doesn't leak. =)
5Htp - there's no illegality in carrying it, holding it or eating it in australia, though selling it in a retail envrionment could be problematic.
Just don't stick em up your bum, Aussie customs are renowned for performing cavity searches upon random NewZealanders.
::grins::
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Fylar
=most legendary, most incomprehensible=™