Wolcen, What kind of equipment do you use?
Wolcen, What kind of equipment do you use?
Rocketman..... what the... huh? Whoa... wait a... what?
What are you doin? I got no idea what you are talking about... rotfl.
I weighed the cylinders to determine how much was left behind after transfer.
I obviously didn't see much, if any compaction with either mix. Several months back I thought I had seen this phenomenon, but I'll just chalk it up to carelessness for now.
Thanks for the tips John. Must be nice getting to work in a real lab.
I have to share mine with the wife. She's taken control of the KLS for now doing chemistry for dinner.
Sometimes you just have to make do with what you have, such as a home made pipette clamp and aquarium valve flow control (please ignore the Mason jar)
http://i965.photobucket.com/albums/ae132/rocketman_photos/The_KLS.jpg
I think Wolcen is just rugged, its a Boston thing!
@ rocketman...I could never keep up with a discussion with you about this stuff. I can imagine that 3rd-wheel feeling setting in immediately if you, John, and I sat down for coffee one day. LOL
May I just say then: nice job on the pictures(same to you John).
@ rocketman...I could never keep up with a discussion with you about this stuff. I can imagine that 3rd-wheel feeling setting in immediately if you, John, and I sat down for coffee one day. LOL
Speaking of which, to expand a little on Rocket's accuracy and error margins, the stated accuracy on any labware is for the labware itself at the stated temperature, and doesn't take into account the human error of reading it or expansion/contraction at a different temp... which is probably something you'll only see a rocket scientist worry about figuring out.Using less precise methods and a couple percent is more likely. Enough to notice? Maybe. Get sloppy in the kitchen and you will definitely notice batch to batch variations. Error percentages will likely be higher for smaller batches. As measurement volumes get smaller, the accuracy usually gets worse. For example, a 5ml pipette I have has 0.1ml divisions, with a stated accuracy of 0.02ml (1/5 division). While 0.02 ml sounds great, that's about 0.7% for a 3ml measurement.