Calibration of Analytical Balance-Monthly

Calibration of Analytical Balance-Monthly

 

 Test for Uncertainty:

Standard Weight as per current certified weight (0.5g): ________g         Limit = NMT 0.001

No. of Observations	Weight in gm observed	( xi–  x )2
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.

Σ (x_i – x  ) ² =________

SD    =              √ Σ  ⁿ ( x _i – x)²       =__________

                              ⁱ⁼¹           n -1

SD =   3 X SD of 10 Replicate weighing = ________________

Standard weight= ______________________

SD= Standard Deviation

2. Checks For Off Centre and Shift Error:

    Standard Weight as per current certified weight (0.05g): _________g

    Limit = Error NMT 0.5 mg      

Position of Weight

        ♦1                                      ♦   2

                            ♦ 5

        ♦ 3                                        ♦  4

  

Sr. No.	Weight in gm observed	Error  (NMT 0.5 mg)
1
2
3
4
5

 

3. Sensitivity Check: Acceptance Criteria: + 0.1%

 

Sr. No.	Nominal Weights in  gm	Standard Weights in gm (Certified)	Acceptance Criteria w.r.t std. weights in gm	Observation in gm
1.	100.0000 g
2.	50.0000 g
3.	20.0000 g
4.	10.0000 g
5.	5.0000 g
6.	2.0000 g
7.	1.0000 g
8.	0.5000 g
9.	0.2000 g
10.	0.1000 g
11.	0.0500 g
12.	0.0200 g

 

The results Complies / Does not complies as per acceptance criteria.

 

Performed By: ________________         Checked By:__________

Date: ________________                                      Date: _________

 

 

“End of Document”