Tricks for When Your Tweezers Eat Your Sample

When putting a sample onto a TEM grid, or when treating that sample with some sort of negative stain (or even just a water rinse), there is often the annoying problem that the tips of the tweezers wick away all (or some) of the liquid. This means that inconsistent amounts of sample or stain are put onto grids (and that the amounts can effectively change over time as the wicking occurs). Such issues can impact the consistency of the staining, which is a real headache given how inconsistent negatives stains can be in the first place! Here are a couple of suggestions to prevent (or at least minimize) this problem:

If you have other suggestions for dealing with this problem, please let us know.