The Home Scientist 021 - Calibrating a Disposable Pipette Gravimetrically 

Thanks. My chemistry teachers failed me in a lot of ways, especially when it comes to practical lab procedure and methodology. I have now been teaching high school chemistry for 5 years and am seeking to always learn more. Thanks for your videos and your book.

Great video. This will certainly come in handy. Thanks Robert!

You must have the patience of a saint to be able to count all of those drops!!

great stuff as always, RBT! I was looking forward to this new release :)

while you were counting those 100 drops, a significant quantity of water evaporated from the beaker. the vapor pressure of cold water is low , but not negligible.

Would the calibration of a volumetric flask or other glassware be affected by built to contain vs. built to deliver ratings on glassware?

very nice!

nice! very useful

cool i can actually use this