I received these for a chemistry kit I bought >10 years ago but hardly used. I recently pulled it out of the garage and plan on cleaning it up and doing all the experiments (400+) that came with the kit, as well as the Advanced Chemistry book I bought from Revain. Of course, not all experiments require drug pipettes, but I didn't want to buy more expensive pipettes and then wash them. These disposables are perfect for my needs and I was pleasantly surprised at how long and big they are! They are at least 6 inches long and obviously hold a lot more liquid than a traditional 4 inch dropper. Again, they're disposable, so I shouldn't have a problem with 100 of them doing all of my respective experiments. HIGHLY RECOMMENDED if you need disposable pipettes!
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