Something you can do with your weighing paper is fold it in half and crease it and take some scissors and cut down halfway and then angle up. You will have what looks like a folded over paper airplane where you have a long snout and then it angles up to a wider area. You open the paper back up when you set it on the balance to weigh your micro amount of powder. Then fold it back together when you prepare to insert the snout into the narrow opening of the vessel. We used to do this with Schlenk flasks where you have a narrow opening but you have to get your powder material down into the neck and past the valve seat.
This is a scale. Balance measures mass and scale measures weight. Balance is not affected by changes in gravity. This scale has no counterweight so the reading depends on gravity.
This video is done meticulously and extremly helpful for learners. The one thing which made me hit the "dislike" button is the background noise which hinders us from hearing you properly. If possible rectify the problem
what the hell he is doing he dont know how to weigh a sample. yes obviousy the balance is very sensitive so how can he tough the balance plate, and the the paper he was using was very flat how come willl the sensitive will last if he toughes the plate while removing the sample, and he was measuring 35miligrams in gram scale lol..... i totally agree with you @roirat04. he is just wasting drugs and solvents
I appreciate your effort but your preparation was not scientific at all. You weighed a very small amount ( probably 80% error introduced). You use a tissue to take your a very small amount and then you put a tiny amount in. Funny thing you said not perfectly accurate !!!! and you are using LC-MS !!!. Thats completely rubish and very dangerous
