Just before and after I bought my analytical balance (220g x 0.1mg)
I read and watched a lot on analytical balances;
I saw that video (or similar) and others,
and found that anti-static modules are available as after market add on options.
So I tested the sensitivity of my scale to static electricity(static) ,
there can definitely be errors due to static,
even the static charge on a pair of synthetic white gloves placed on the top of the glass cover can have a significant effect,
but cotton gloves had no detectable effect.
I think that a very high voltage was applied to the ptfe in the video to get such a large display deviation.
In practice (here in Malaysia with high humidity) static has negligible effect on measured weight,
but I'd expect the effect to be worth considering in drier climates/environments.
PS static is a good reason to NOT clean the balance too often or thoroughly
There are anti-static spray-on coatings available, but I've not tried any.
[Edited on 13-9-2021 by Sulaiman]unionised - 13-9-2021 at 03:54
You can fix the problem completely by weighing things in a conductive container.
I wonder what kind of a scale they were using here?
"The mixture was 45% carnauba wax, 45% resin, and 10% beeswax. In 21 hours the weight increased over 30mg. A particular point is the sudden weight
increase of around 4 mg after 5.5 hours. b shows a diagram of the electrostatic field of another similar electret." https://www.researchgate.net/figure/a-shows-the-weight-measu...
