Balance Calibration
- Calibration by External Certified Weight
2,5,10,20,50,100,200,500 mg
1,2,5,10,20,50,200
Tolerance limit give std Companion
2. Measurement Uncertainty (NMT 0. 10 %)
50 mg weight are compered
Measurement uncertainty = 2 X S.D
Reported Standard Weight
3. Electricity measurement
center
Left top corner
Right Top corner
Left Down corner
Right Down corner
all the position should not more +- 0.20mg
Chemistry Interview 