ONiLAB Single Channel Pipettors Adjustable Volume Micro Pipettes, 0.1-2.5μl (7010101001)…

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 ....

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.

Hidden in the instructions, they tell you to “go to the first stop point” to draw liquid in. Initially, I was pushing the drawing mechanism all the way down and couldn’t see why it was taking up so much liquid. Then, I tried it as the instructions suggested (and pushed all the way down to push liquid OUT) and it was accurate to 1 mg. This is perfect for perfumery. Inexpensive and dependable. I can even clean the tips and reuse them. Well done, onilab! I’ll be back!

This aren't in the same league as the ones you find in professional labs that easily cost ten times as much, but they are fantastic for home/hobbyist use. I go through tons of single use pipettes that are inaccurate and wasteful, but with this, I just have to trash the tip and I'm back in business. It's so much easier to use too. And to anyone who is complaining about inaccuracy, I did not have that issue at all. I confirmed using distilled water on a milligram scale and found it to be very, very good in terms of accuracy and precision.

Does what it says on the tin. It extracts, moves, and inserts measured quantities of liquid wherever you'd like. At this price I would not trust the numbers to be precise for academic research if you need your pipettes to be ultra-precise for published research or healthcare assays or medication dosing but if you are doing molecular bio and numbers don't have to be perfect then this is a fantastic deal. I use these for my home lab so I don't get in trouble using company equipment for personal use. They work great. I love them! Never had a problem?