flourescent lighting. powder scale problems

I have been having a problem with several electronic scales. I talked to my gunsmith and he told me that fluorescent lighting near the scale might be the problem ( I have a fluorescent lighting.panel directly above my reloading table) I am getting large variations in readings. I am setting up to load 9mm @ 4.4 "WW231" but I get erratic readings ( 5.7gr being the highest)
need less to say reloading in on hold untill I work this problem out to get consistent scale readings.

Question; if I remove the fluorescent tubes and replace them with LED lighting tubes - will this resolve the problem??.
I am considering going to an RCBS 505. but I have read that fluorescent lighting causes problems with this as well

Quick test is to simply turn off the fluorescent light and check the scale with LEDs, flashlight, phone, etc... if it stabilizes, well, there you go. - mostly lead

I tried keeping the fluorescent lights off & using an LED lamp. but I was still not getting consistent readings. so i was wondering if the led's had the same effect? I have read that any electric filed can cause problems , from cell phones to electric space heaters.
I was thinking of going with a beam scale but what I see in reviews is that they aren't as dependable as they used to be.

Walmart has 4’ twin “tube” led lights that are incredibly bright for under $20
I was thinking of this also but I am not sure that it would resolve the problem

Is the airflow completely calm where your scale is? Wouldn't take much to change a 4.4 grain reading...mostly lead

yes, no air flow while I'm reloading

when i moved I lost the powder pan for my rcbs 10-10. that I have used for 35+ years without trouble.
now trying to find a decent scale seems to be a real problem
\

I am measuring single throws from a redding br-3 this should be +/- .1tenth
I had the measure sent back to the factory thinking that it was the powder measure but redding tells me it checks out.

thuis is what i sent to redding tech department
On Mar 28, 2021, at 9:48 PM,

mike & redding techline
after much thought I decided to re-test my powder measure today
I started with the following I reviewed the directions, and started back on square 1
1.cleaned micrometers again ( alcohol swab ) backed the adjustment all the way for cleaning then i reset
2. cleaned powder measure ( alcohol swab )
3. applied a light coat of graphite to powder measure drum
4.cleaned dillion drop tube
5. reconnected the drop tube checking that the powder measure was correctly seated in the tube.
6. remounted assembled powder measure with drop tube onto the press.
7. put new batteries in scale

then i filled the measure with powder ( Winchester 231) and fine tuned my charge weight.
I started throwing test charges and recording charge weights I was looking for a charge of 3.5 grains I I started getting random variance in charge weights. I expect that there should be a "small" variation in weights, and having used this model of powder measure and this powder ( Winchester 231) for loading 45acp I have come to expect an average if 1/10th of a grain variance. when i get to the bottom of a container I will some times get 2/10th of a grain variance.so I am expecting to get weights of about 3.4 to 3.6 grains on my charges.I tested 151 charges and found the following

my test charges seemed to drift from the very start of my testing ( photo of my records of charge weights as you see it starts out at about 3.6 on #1 as i progress the charge weights get more and more off #11- 4.0grains / #17-4.1grains /#19 - 4.3 grains /#42 - 4.3 grains / #43- 4.58 grains
( 344through #53 are in the area of 4.5 grains) ( as are #68 through 75) # 76came in at 5.2grains

and #83 was 7.64 grains charge #92 was7.94grains ( almost twice the charge i am wanting and this is well beyond the recommended powder charge for a 9mm with a 124 gr bullet)
as you can see on page 3 (right side) I started getting lower
powder charges going from #7 -3.6 grains to #30 -1.8grains then the charge slowly increased in weight
note on #6 I changed scaled but I still could not get a constant charge weight.

to sum this up I got variations in charge weights from ( #30 -1.8grains page 3) ( #83- 7.64 grains)
& ( #92- 7.94 grains) keep in mind that i didn't reset or adjust the micrometers in any way during this testing
Sierra loading data stated that 5.1 is a max charge
I have tried every thing I can think of to resolve this. is there anything that I might have missed?

Higgite - no visible difference in the volume of the charges

Otto-
Buy a set of check weights...
I have been looking for a set thank you for the link!.it is now on my shopping list for the week
do you notice that on amazon the scale check weight cost for Jewelry ( grams is at times under $10 ) https://www.amazon.com/Hestya-Calib...9043c&pd_rd_wg=d0cCE&pd_rd_i=B078Q3JZY7&psc=1
but midway wants 40+ for check weights..

thank you both for your help!