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Chemistry Forums for Students => Analytical Chemistry Forum => Topic started by: ktmc777 on January 30, 2021, 09:35:02 PM

Title: Static when using analytical balance
Post by: ktmc777 on January 30, 2021, 09:35:02 PM

I have these analytical chemistry labs and my grade is based off the precision/accuracy of my results (yikes, I know). I live in a dry environment, and it causes a lot of static when I use my analytical balance to measure a sample. Does anyone know any tricks or have any tips that could help me?
I heard there are these bracelets that help prevent static by grounding you or something. I don't know if it's legit, so if anyone knows please let me know!!

Title: Re: Static when using analytical balance
Post by: jeffmoonchop on January 30, 2021, 10:31:52 PM

Dont weat gloves. If you are weighing into plastic containers you'll have high static. Try weighing onto squares of paper folded diagonally. You can buy antistatic brushes and guns. The gun should get rid of static pretty well.

Title: Re: Static when using analytical balance
Post by: wildfyr on February 01, 2021, 10:06:44 PM

People might hate this answer, but I breathe on things. Some vapor from your breath will briefly humidify things and reduce static.

Title: Re: Static when using analytical balance
Post by: billnotgatez on February 01, 2021, 10:24:25 PM

which is worse for accurate measurements
static electricity
or
humidity

caveat - i seldom need that level of accuracy = just wondering

Title: Re: Static when using analytical balance
Post by: wildfyr on February 03, 2021, 09:44:17 PM

I... think static? A balance works fine at any humidity. If you're weighing something very hygroscopic is the only problem I see.

Title: Re: Static when using analytical balance
Post by: Oligo1452 on February 19, 2021, 08:47:45 AM

In my experience with highly static material, an anti-static gun is a must have. If your sample is hygroscopic, a nitrogen purged environment (relative humidity <15.0%) is recommended