ONiLAB 10-100ul Single-Channel Manual Adjustable Variable Volume Pipettes, Autoclavable pipettor

Works well for accurate measurements of liquid. And with the extra purchase of the replacement tips it can be used for many years with no worries of contamination.

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.

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.