Imagine having tube after tube of competent cells for your transformations, all (virtually) free of charge. The way to reach this nirvana is to make your own competent cells. Traditionally this can be a tricky feat, but the procedure laid out in this guide makes it simple and routine.

Keeping your pipette clean and sparkling is critical. After all a contaminated pipette could ruin your precious samples in the lab! Download our cheat sheet to get a simple guide to cleaning your pipette. Stick it up in the lab to help remind yourself how to look after this vital lab tool.