ONiLAB 2-20ul Single-Channel Pipette Pipettor Ergonomic Design Adjustable Micro Pipette…

Works very well just don't release the thumb plunger to quickly or it'll shoot up into the neck. A slow release and it's spot on every time and exact measurement.

No tiene ni dos meses que la compre y ya dejó de funcionar. Solo la use 5 veces para medir un volumen de agua y dejo de funcionar ....

Solid micropipette to make repeated, and small, measurements much more accurate. This is a great middle ground between lab-grade and the constant use of a graduated cylinder or other measuring device. The precision is comparable to most using a beaker, grad. cyl, etc., but it is much faster, especially if using different volumes.

Reasonable performance at a low price

I have been using this for reef aquarium water testing. It arrived mostly dialed in. I would recommend having a trusted method of verifying the amounts it is dispensing and, adjust it with the provided tool. It is easy to push the tip ejector while attempting to draw up a sample. This is easily avoided my rotating the pipettor so your thumb doesn’t touch it. However, while holding it that way, it is easy to accidentally spin the plunger while taking a sample, adjusting it to the next tenth. Also, depressing or releasing the plunger with any sort of haste will prove a deviation in sample size. So, take your time. These are minor issues and, it reliably provides repeatable sample volumes if you are attentive to its quirks. I feel like good value is provided for the price. It isn’t as effortless to use as the best ones out there but, it doesn’t cost as much as those, either.