Heathrow Scientific HD81121A Disposable Inoculating 1 microliter Sterile Loop, Flexible Polypropylene, 4mm Diameter x 200mm Length, Blue (Pack of 1000)

Sadly, I HATE them. The loop is so thick! I have no doubt it holds the 1ul it states, but in a thick loop: it's hard to pick a small colony with them. They also do not fit snuggly in the bottom of a PCR tube, so when I put the colony in there and swirl the loop to detach the microorganisms, I cannot "squish" them againt the tube walls to help open them. But maybe that's just me.They are VERY flexible, which does not help with colony picking. It would be good for liquid colonies spreading on agar plates, but found the plastic loop to be a bit rough (at least the batch I got), which shears the agar.I'll go back to my other brand, which is half the price and is clearly better suited to my needs.