ONiLAB 200-1000ul Multi-Volume Adjustable Autoclavable Micropipette/Pipettor, Single Channel, 7010101016

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.

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.

Reasonable performance at a low price

This will get you 10 mL of whatever liquid as long as it isn't corrosive to plastic. You can adjust it from 0 to 10 mL by increments of .1 if you want (that's a tiny amount for those who didn't know). Easy to clean but try not to get the inside of the tool itself wet. That part isn't so easy to clean, but it's easy to avoid getting all sorts of goop in it, unless you're suctioning goop, then I don't know what to tell you. I like that it's easy to hold, and you only make the mistake of the auto discharge in a solution once or twice before you figure out the suction and discharge buttons out for good.