How to test digital scale accuracy?

How to test digital scale accuracy and quality?
1. Put counterweight in the middle of weighing plate to test its accuracy.
You can re-put counterweight on scale to check its repeatability
2. Put counterweight in the four corners of weighing plate to test its unbalance loading
SF-400C bench scale
Capacity/Division: 500g*0.01g 600g*0.01g
Capacity/Division: 1kg*0.1g 2kg*0.1g 3kg*0.1g
Scale size: 225*158*42mm
Units: g ct oz lb tl kg
SF-400C bench scale is produced by Jiangyin Suofei Electronic Technology Co.,Ltd. It can be used as kitchen food scale, fabric weighing scale, powder weighing scale, gold weighing scale, etc
We are professional manufacturer of digital scale since 2004. Our products include baby scale, bathroom scale, kitchen scale, luggage scale, crane scale, postal scale, pocket scale etc.
We pass BSCI and ISO 9001 audit. Our products have CE, RoHS, REACH certification.
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