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Federal DemocraticRepublic of Ethiopia
≠ EDICT OF GOVERNMENT ±In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby made available on a noncommercial basis, as it is the right of all humans to know and speak the laws that govern them.
ET ISO 5538 (2012) (English): Milk andmilk products - Sampling - Inspection byattributes
©ESA
Milk and milk products Sampling Inspection by attributes
A full stop (.) shall substitute comma (,) as decimal marker.
ETHIOPIAN STANDARD ES ISO 5538:2012
1
Milk and milk products Sampling Inspection by attributes
1 Scope
1.1
1.2
1.3
1.4
2 Normative references
Sampling procedures for inspection by attributes Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
Statistics Vocabulary and symbols Part 1: Probability and general statistical terms
Statistics Vocabulary and symbols Part 2: Applied statistics
3 Terms and definitions
3.1 acceptance quality limit AQL
©ESA
ES ISO 5538:2012
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4 Sampling plans
5 Selection of sampling plan
5.1 Classification of defects
5.1.1 General
5.1.2 Critical defect
5.1.3 Major defect
5.1.4 Minor defect
©ESA
ES ISO 5538:2012
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5.2 Choice of inspection level and AQL
5.2.1
n
n
5.2.2
n
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6 Records
7 Selection of units
Table 1 Inspection Level I AQL = 2,5 %
Lot size Normal inspection Tightened inspection Reduced inspection
n n n
Table 2 Inspection Level I AQL = 4,0 %
Lot size Normal inspection Tightened inspection Reduced inspection
n n n
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Table 3 Inspection Level I AQL = 6,5 %
Lot size Normal inspection Tightened inspection Reduced inspection
n n n
Table 4 Inspection Level I AQL = 10 %
Lot size Normal inspection Tightened inspection Reduced inspection
n n n
Table 5 Inspection Level S-4 AQL = 2,5 %
Lot size Normal inspection Tightened inspection Reduced inspection
n n n
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Table 6 Inspection Level S-4 AQL = 4,0 %
Lot size Normal inspection Tightened inspection Reduced inspection
n n n
Table 7 Inspection Level S-4 AQL = 6,5 %
Lot size Normal inspection Tightened inspection Reduced inspection
n n n
Table 8 Inspection Level S-4 AQL = 10 %
Lot size Normal inspection Tightened inspection Reduced inspection
n n n
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Table 9 Inspection Level S-3 AQL = 2,5 %
Lot size Normal inspection Tightened inspection Reduced inspection
n n n
Table 10 Inspection Level S-3 AQL = 4,0 %
Lot size Normal inspection Tightened inspection Reduced inspection
n n n
Table 11 Inspection Level S-3 AQL = 6,5 %
Lot size Normal inspection Tightened inspection Reduced inspection
n n n
Table 12 Inspection Level S-3 AQL = 10 %
Lot size Normal inspection Tightened inspection Reduced inspection
n n n
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Table 13 Inspection Level S-2 AQL = 2,5 %
Lot size Normal inspection Tightened inspection Reduced inspection
n n n
Table 14 Inspection Level S-2 AQL = 4,0 %
Lot size Normal inspection Tightened inspection Reduced inspection
n n n
Table 15 Inspection Level S-2 AQL = 6,5 %
Lot size Normal inspection Tightened inspection Reduced inspection
n n n
Table 16 Inspection Level S-2 AQL = 10 %
Lot size Normal inspection Tightened inspection Reduced inspection
n n n
Table 17 Inspection Level S-1 AQL = 2,5 %
Lot size Normal inspection Tightened inspection Reduced inspection
n n n
©ESA
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Table 18 Inspection Level S-1 AQL = 4,0 %
Lot size Normal inspection Tightened inspection Reduced inspection
n n n
Table 19 Inspection Level S-1 = AQL = 6,5 %
Lot size Normal inspection Tightened inspection Reduced inspection
n n n
Table 20 Inspection Level S-1 AQL = 10 %
Lot size Normal inspection Tightened inspection Reduced inspection
n n n
Table 21 Single sampling plans at AQL = 2,5 %
n Lot size (units) for inspection levels shown
S-1 S-2 S-3 S-4 I
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Table 22 Single sampling plans at AQL = 4,0 %
n Lot size (units) for inspection levels shown
S-1 S-2 S-3 S-4 I
Table 23 Single sampling plans at AQL = 6,5 %
n Lot size (units) for inspection levels shown
S-1 S-2 S-3 S-4 I
Table 24 Single sampling plans at AQL = 10 %
n Lot size (units) for inspection levels shown S-1 S-2 S-3 S-4 I
©ESA
ES ISO 5538:2012
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Annex A
Statistical theory
A.1
A.2
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ES ISO 5538:2012
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Annex B
Critical defects
is likelya major
FnD
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n
F
D
F
Risk Factor
The acceptance number is, of course, always zero in this context
n
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Annex C
Drawing of samples
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15 ©ESA
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Table C.1 Random sampling numbers
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Table C.2 Random sampling numbers
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Table C.3 Random sampling numbers
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Table C.4 Random sampling numbers
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Bibliography
Milk and milk products Guidance on sampling
©ESA
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011-‐ 646 06 85, 011-‐ 646 05 65 011-‐646 08 80 2310 Addis Ababa, Ethiopia
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Organization and Objectives
The Ethiopian Standards Agency (ESA) is the national standards body of Ethiopia established in 2010 based on regulation No. 193/2010.ESA is established due to the restructuring of Quality and Standards Authority of Ethiopia (QSAE) which was established in 1970.
ESA’s objectives are:-
Develop Ethiopian standards and establish a system that enable to check weather goods and services are in compliance with the required standards, Facilitate the country’s technology transfer through the use of standards, Develop national standards for local products and services so as to make them competitive in the international market.
Ethiopian Standards
The Ethiopian Standards are developed by national technical committees which are composed of different stakeholders consisting of educational Institutions, research institutes, government organizations, certification, inspection, and testing organizations, regulatory bodies, consumer association etc. The requirements and/ or recommendations contained in Ethiopian Standards are consensus based that reflects the interest of the TC representatives and also of comments received from the public and other sources. Ethiopian Standards are approved by the National Standardization Council and are kept under continuous review after publication and updated regularly to take account of latest scientific and technological changes. Orders for all Ethiopian Standards, International Standard and ASTM standards, including electronic versions, should be addressed to the Documentation and Publication Team at the Head office and Branch (Liaisons) offices. A catalogue of Ethiopian Standards is also available freely and can be accessed in from our website.
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