I’ve been exploring the darker areas of Sigma-Aldrich’s website lately[1], and I just wanted to highlight their technical bulletins.

A lot of them contain just what you’d expect, rather dry physical properties of chemicals and labware (ie. AL-223, Description of Pyrex Glass), but there are a few real gems. My picks, in numerical order:

**AL-134 Handling Air-Sensitive Reagents

AL-143 Mineral Adsorbents, Filter Agents, and Drying Agents (HTML)

AL-219 Cleaning Procedures for Kugelrohr Vacuum Drive Unit

AL-220 Guide to Selecting and Using Fritted Glassware

AL-230 Pressure Conversion Chart (handy)

**AL-134 is a really nice intro to dry technique, filled with pretty pictures and all the rest.


[1] Have you seen their web toolbox? http://www.sigmaaldrich.com/technical-service-home/web-tool-box.html I could spend a good hour just reading up on different ways to give mice cancer. http://www.sigmaaldrich.com/life-science/cell-biology/cancer-research/learning-center/carcinogen-selector.html