If you are new to the lab bench, and perhaps even if you’re not, you may not know how to make loading dye for agarose gels. Its the sort of thing that tends to get made rarely and then persist, so people often inherit a supply and have no idea how to make more when they run out. For this sort of thing the best reference is the relevant appendix at the back of the Sambrook et al. Molecular Cloning text books (near Megan’s desk) and, of course, there is Google. Or, you can just do what I do. My recipe is incredibly simple and would be close to the cheapest option too. Continue reading →