Similar International Standards
PAS 100:2018British Standards Institution (BSI), UK
MediumCurrent
Specification for composted materials
IS 11626 is a process guide, while PAS 100 is a product quality specification, but both aim to produce safe, effective compost.
AS 4454-2012Standards Australia, Australia
MediumCurrent
Composts, soil conditioners and mulches
Specifies final product quality and safety requirements for compost, which is the intended outcome of the process guided by IS 11626.
Regulation (EU) 2019/1009European Union
HighCurrent
Regulation (EU) 2019/1009 laying down rules on the making available on the market of EU fertilising products
Defines comprehensive quality, safety, and labelling requirements for compost sold as an 'EU fertilising product', functioning as a standard.
STA ProgramUS Composting Council (USCC), USA
HighCurrent
Seal of Testing Assurance (STA) Program Requirements
Provides a compost testing and certification scheme with defined parameters for quality and safety, aligning with the IS code's goals.
Key Differences
≠IS 11626 is a guide for the composting process (how-to), whereas modern international standards (e.g., PAS 100, AS 4454) are primarily product specifications focusing on the final compost quality and safety (what-to-achieve).
≠International standards have significantly more stringent and comprehensive limits for heavy metals (e.g., Cadmium, Mercury) and physical contaminants like plastics and glass, often including limits for microplastics.
≠Modern standards mandate specific quantitative tests for compost stability and maturity (e.g., Oxygen Uptake Rate, Dewar self-heating test) to prevent phytotoxicity, while IS 11626 relies on simpler indicators like C/N ratio and odour.
≠International equivalents require rigorous control and documentation of input materials (feedstocks), often banning or restricting certain waste types. IS 11626 provides broader guidance on MSW without such detailed feedstock control requirements.
≠Pathogen reduction requirements are more specific in international standards, mandating precise time-temperature profiles (e.g., 55°C for 15 days with 5 turns) and testing for indicators like E. coli or Salmonella, unlike the more general guidance in the IS code.
Key Similarities
≈All standards are founded on the same core principle of controlled aerobic biological decomposition of organic matter to create a stable, humus-like product.
≈The fundamental process control parameters, including the need to manage moisture content, aeration (through turning or forced air), and temperature, are recognized as critical in both the IS code and international standards.
≈The importance of the Carbon-to-Nitrogen (C/N) ratio as a key parameter for initiating the process and for assessing the progress of composting is a common element across all standards.
≈Both the Indian and international standards share the ultimate goal of producing a final product that is safe for handling, environmentally benign, and beneficial for use in agriculture or horticulture as a soil improver.