Similar International Standards
ISO 2859-1:1999ISO (International Organization for Standardization), International
HighCurrent
Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
Provides the generic statistical sampling methodology upon which IS 9140 is based.
ASME A112.19.2-2018/CSA B45.1-18ASME (American Society of Mechanical Engineers) / CSA (Canadian Standards Association), USA/Canada
LowCurrent
Plumbing Fixtures
A product performance standard that includes clauses for sampling for conformity testing, but is not a dedicated sampling standard.
BS EN 997:2018+A1:2022BSI (British Standards Institution) / CEN (European Committee for Standardization), UK/Europe
LowCurrent
WC pans and WC suites with integral trap
A product performance standard incorporating sampling for Factory Production Control (FPC) and audit testing.
ASTM C1517-10(2018)ASTM International, USA
MediumCurrent
Standard Guide for Determining the Standard Specification for Vitreous China Plumbing Fixtures
A guide that references sampling plans (like ANSI/ASQ Z1.4) for quality assurance, aligning with the intent of IS 9140.
Key Differences
≠IS 9140 is a standalone, dedicated standard for sampling methods, whereas modern international standards like EN 997 and ASME A112.19.2 integrate sampling procedures within the broader product performance and testing standard.
≠The Indian standard provides exhaustive prescriptive lists classifying defects into 'Critical', 'Major A', 'Major B', and 'Minor'. International performance standards focus on pass/fail criteria for specific measured tests (e.g., warpage, water absorption) rather than a generalized visual defect classification.
≠IS 9140 uses its own specific sampling tables (e.g., sample size of 50 for lot size 301-500) which are a simplification/modification of the base ISO 2859-1 standard (which would require a sample size of 80 for the same lot size at General Inspection Level II).
≠IS 9140 details both single and double sampling plans for lot acceptance, a formal statistical approach. Some international product standards may specify simpler periodic sampling for factory control (e.g., testing one unit per production shift).
Key Similarities
≈The fundamental methodology of IS 9140 is based on internationally recognized statistical principles of acceptance sampling by attributes, as codified in ISO 2859-1.
≈Both IS 9140 and international quality control practices share the core concept of lot-by-lot inspection, where a large batch's quality is inferred from a smaller, randomly drawn sample.
≈The principle of using an Acceptance Number (Ac) and a Rejection Number (Re) to decide the fate of a lot based on the number of defective items found in the sample is common to both IS 9140 and ISO 2859-1.
≈All standards, including IS 9140 and its international counterparts, mandate that the sampling process must be random to ensure the sample is truly representative of the lot's quality.