I bought 2 half ounces and 1 tenth ounce then went right home and put them on my digital scale, all three container's contents weighed right on to the .01 gram. If they are off it would be from the processor as they do the packaging.
Dont have your phone or other electronic close to scale it will effect the accuracy..to answer your question no
Never checked
Yes I have. But I forgot to ask them about it. I was under a couple points.
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