Let's not conflate "quality" of the paper with whether the results are surprising or interesting to experts. As far as I tell, the work is competently done and

Let's not conflate "quality" of the paper with whether the results are surprising or interesting to experts. As far as I tell, the work is competently done and provides useful information to consumers. Namely, that commercially available ceramic mugs likely do not pose a lead hazard, with quantitative estimates of the lead they leach. It's not going to win a Nobel prize – but I don't think that should be the bar for taking food safety research seriously.