ACCEPTABLE QUALITY LEVEL (AQL)

For general products, we are applying normal inspection on AQL Standard of 2.5 for major and 4.0 for minor.  Other AQL standard rather then specified will be subject to prior discussion before our acceptance for mutual agreement.  The tightened inspection will be applied only for 2nd inspection after failure of  the1st normal inspection.

REFERENCES FROM FIELDS ABOUT AQL (GOOGLE SEARCH)

Table 2. AQL Sampling Table based on the Mil-STD-105D

 

Acceptable Quality Levels for Normal Inspection (% defective)

Lot Size/ Sample Size

.01

.015

.025

.04

.065

.10

.15

.25

.40

.65

1.0

1.5

2.5

4.0

 

Lot Acceptance (Ac) Number (maximum number of rejects to accept the lot)

LS=2 to 8

SS=2

0

0

0

0

0

0

0

0

0

0

0

0

0

0

LS=9 to 15

SS=3

0

0

0

0

0

0

0

0

0

0

0

0

0

0

LS=16 to 25

SS=5

0

0

0

0

0

0

0

0

0

0

0

0

0

0

LS=26 to 50

SS=8

0

0

0

0

0

0

0

0

0

0

0

0

1

1

LS=51 to 90

SS=13

0

0

0

0

0

0

0

0

0

0

0

0

1

1

91 to 150

SS=20

0

0

0

0

0

0

0

0

0

0

0

0

1

2

151 to 280

SS=32

0

0

0

0

0

0

0

0

0

0

0

1

2

3

281 to 500

SS=50

0

0

0

0

0

0

0

0

0

0

1

2

3

4

501 to 1200

SS=80

0

0

0

0

0

0

0

0

0

1

2

3

5

7

1201 to 3.2K

SS=125

0

0

0

0

0

0

0

0

1

2

3

5

7

10

3201 to 10K

SS=200

0

0

0

0

0

0

1

1

2

3

5

7

10

14

10001-35K

SS=315

0

0

0

0

0

0

1

2

3

5

7

10

14

21

35001-150K

SS=500

0

0

0

1

1

1

2

3

5

7

10

14

21

-

150001-500K

SS=800

0

0

0

1

1

2

3

5

7

10

14

21

21

-

 

.01

.015

.025

.04

.065

.10

.15

.25

.40

.65

1.0

1.5

2.5

4.0

AQL - TIGHTEN INSPECTION (REFERENCE SOURCE)

2.5 AQL - TIGHTENED INSPECTION

Lot Size Sample
Size
Acc Rej Criteria for Continuing Inspection
1 - 8 All * * N/A
91 - 150
(Cumulative S/S)
8
20
0
1
2
2
If 1 defective found, go to S/S of 20. **
151 - 280
(Cumulative S/S)
20
32
0
1
2
2
If 1 defective found, go to S/S of 32.
281 - 500
(Cumulative S/S)
20
50
1
2
3
3
If 2 defectives found, go to S/S of 50.
501 - 1200
(Cumulative S/S)
32
80
1
3
4
4
If 2 - 3 defectives found, go to S/S of 80
1201 - 3200
(Cumulative S/S)
50
125
2
5
6
6
If 3 - 5 defectives found, go to S/S of 125
3201 - 10,000
(Cumulative S/S)
80
200
3
8
9
9
If 4 - 8 defectives found, go to S/S of 200
10,001 - 35,000
(Cumulative S/S)
125
315
5
12
13
13
If 6 - 12 defectives found. go to S/S of 315
Over 35,000
(Cumulative S/S)
200
500
8
18
19
19
If 9 - 18 defectives found. go to S/S of 500

4.0 AQL - TIGHTENED INSPECTION

Lot Size Sample
Size
Acc Rej Criteria for Continuing Inspection
1 - 8 All * * N/A
9 - 90
(Cumulative S/S)
5
13
0
1
2
2
If 1 defective found, go to S/S of 13. *
91 - 150
(Cumulative S/S)
13
20
0
1
2
2
If 1 defective found, go to S/S of 20.
151 - 280
(Cumulative S/S)
13
32
1
2
3
3
If 2 defectives found, go to S/S of 32.
281 - 500
(Cumulative S/S)
20
50
1
3
4
4
If 2 - 3 defectives found, go to S/S of 50.
501 - 1200
(Cumulative S/S)
32
80
2
5
6
6
If 3 - 5 defectives found, go to S/S of 80
1201 - 3200
(Cumulative S/S)
50
125
3
8
9
9
If 4 - 8 defectives found, go to S/S of 125
3201 - 10,000
(Cumulative S/S)
80
200
5
12
13
13
If 6 - 12 defectives found, go to S/S of 200
10,001 - 35,000
(Cumulative S/S)
125
315
8
18
19
19
If 9 - 18 defectives found. go to S/S of 315
Over 35,000
(Cumulative S/S)
200
315
12
18
19
19
If 13 - 18 defectives found. go to S/S of 312
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