Cloudrepair
Silver $$ Contributor
I haven't heard of led lighting causing problems with a lab type balance/scale. Did you mean fluorescence lights?I think most scales are advertising abbreviated specifications that apply only to near lab conditions.
Even a well known (favorite) milligram scale has given people issues with loading room environments.
Some have gone to power conditioners, restricting electronics like cell phones/modems near the scale, LED lighting, antistatic mats, granite surface plates to correct "funny" readings.
That well known scale has realistic specifications
Repeatability (STANDARD DEVIATION) of 1 count,
Linearity over full range of +/- 2 counts.
Add up everything and a few milligram counts are still LESS than a tenth of a grain.
To verify both scale performance in YOUR environment, comparison check weights at several points through out the range and a small sensitivity weight, just like a cal lab would do to put their label on a calibrated device, just might detect poor performance.
But I agree, get a scale designed and built by US engineers, or maybe Japanese (just not Chinese).
Cheaper scales just list +/- what ever.
No mention of zero drift, repeatability or linearity. There might be a 0.1 grain $40 scale that will actually perform to a count, day in and day out.
For the scale posted in first post, try Brownells or even Amazon.
Sorry if I stepped on some toes by posting here.