June 20th 2012 04:13 am
The pages of the Sigma catalog are replete with thousands of high-quality chemical reagents. But today I stumbled upon something I hadn’t seen before: “Sewage Sludge (Mixed Origin)“. This material is not only exorbitantly expensive ($619.20 for 40g) but also backordered! Perhaps there is an unmet demand for pristine sewage sludge. Your guess is as good as mine.