Certification Marks of India: ISI, Agmark and Hallmark
Exam notes on India’s quality standards and certification marks: ISI and BIS, hallmarking and gold fineness, Agmark, FSSAI, Eco Mark and BEE star ratings.
By GK24 Editorial Team· Published · 6 min read

A certification mark is a stamp that tells a buyer the product has been tested against a written standard. India uses a different mark for each family of goods: the ISI mark for manufactured articles, the hallmark for gold and silver, Agmark for graded agricultural produce, the FSSAI licence for food, the Eco Mark for environment-friendly goods and the BEE star rating for appliances. Examiners ask this topic because each mark goes with a body, a Ministry and an Act, and all three are fixed. Papers set one matching question or one "which body issues" question almost every year. This note puts every mark beside its authority and its law.
The marks and who issues them
| Mark | Issuing body | Applies to | Ministry |
|---|---|---|---|
| ISI mark | Bureau of Indian Standards | Industrial and manufactured goods | Consumer Affairs, Food and Public Distribution |
| Hallmark | Bureau of Indian Standards | Gold and silver jewellery and artefacts | Consumer Affairs, Food and Public Distribution |
| Agmark | Directorate of Marketing and Inspection | Graded agricultural produce | Agriculture and Farmers’ Welfare |
| FSSAI licence number and the veg or non-veg symbol | Food Safety and Standards Authority of India | Packaged and processed food | Health and Family Welfare |
| Eco Mark | Bureau of Indian Standards | Environment-friendly products | Environment, Forest and Climate Change for the scheme |
| BEE star rating | Bureau of Energy Efficiency | Electrical appliances | Power |
| Silk Mark | Silk Mark Organisation of India under the Central Silk Board | Pure natural silk | Textiles |
| Handloom Mark | Development Commissioner for Handlooms | Genuine handloom cloth | Textiles |
The Bureau of Indian Standards and the ISI mark
The Bureau of Indian Standards is India’s National Standards Body. It came into being on 1 April 1987 under the Bureau of Indian Standards Act, 1986, taking over the work of the Indian Standards Institution, which had been set up in 1947; the mark kept the older initials, which is why a product carries an ISI mark although a Bureau issues it. The Bureau now works under the Bureau of Indian Standards Act, 2016, which replaced the 1986 Act, widened its powers to standardise goods, services and systems, and allowed the Central Government to make certification compulsory for any product needed for public health, safety or security. It functions under the Ministry of Consumer Affairs, Food and Public Distribution and its headquarters are at New Delhi; the Union Minister of that Ministry is its President.
Certification is voluntary for most goods but has been made compulsory for products where failure is dangerous. Portland cement, liquefied petroleum gas cylinders and their valves, protective helmets for riders of two-wheelers, packaged drinking water and mineral water, milk powder and infant milk food, electrical appliances, steel for construction and automobile tyres are the examples papers use. A product under a compulsory scheme may not be made, imported, sold or stocked without the mark, and the penalty is laid down in the Act. The Bureau also runs the Hallmarking Scheme and the laboratories that test samples, while the National Test House, founded at Kolkata in 1912, is the older Government testing laboratory still used for independent testing.
Hallmarking of gold and silver
A hallmark certifies the purity or fineness of a precious metal. The Bureau of Indian Standards is the sole hallmarking agency in India; it began hallmarking gold jewellery in 2000 and silver artefacts in 2005, and testing is done at recognised Assaying and Hallmarking Centres. From 2021 a hallmarked gold article carries three marks: the Bureau’s triangular logo, the purity and fineness grade, and the six-digit alphanumeric Hallmark Unique Identification, the HUID, which can be checked in the Bureau’s app. The assaying centre’s mark and the jeweller’s mark that older pieces show were dropped when the HUID came in.
| Carat | Fineness marked | Gold content |
|---|---|---|
| 24 carat | 999 | Pure gold, too soft for jewellery |
| 23 carat | 958 | 95.8 per cent gold |
| 22 carat | 916 | 91.6 per cent gold, the common jewellery grade |
| 20 carat | 833 | 83.3 per cent gold |
| 18 carat | 750 | 75 per cent gold |
| 14 carat | 585 | 58.5 per cent gold |
The arithmetic is worth doing once: carat divided by 24, multiplied by 1,000, gives the fineness number, so 22 divided by 24 is 0.916 and the mark reads 916. Silver is marked by fineness alone, from 990 down to 800.
Agmark and agricultural grading
Agmark is the grade mark for agricultural and allied produce. It rests on the Agricultural Produce (Grading and Marking) Act, 1937, and is administered by the Directorate of Marketing and Inspection, an attached office of the Ministry of Agriculture and Farmers’ Welfare with its headquarters at Faridabad. The word itself is a contraction of "agricultural marketing". Grading under Agmark is voluntary for most commodities, and the grades are named Special, Good, Fair and Average, or by numbers, depending on the commodity. Among the produce commonly graded are edible oils, ghee, butter, honey, spices, pulses, wheat flour, besan and eggs. Blended edible vegetable oils and ghee are the products for which Agmark grading has been made compulsory. The Central Agmark Laboratory, the apex laboratory for the scheme, is at Nagpur, and there are regional Agmark laboratories elsewhere.
FSSAI and the food marks
The Food Safety and Standards Authority of India was created by the Food Safety and Standards Act, 2006, which consolidated eight earlier food laws, among them the Prevention of Food Adulteration Act, 1954 and the Fruit Products Order, 1955. The Authority was established in 2008, works under the Ministry of Health and Family Welfare and has its headquarters at New Delhi. Every packaged food must display a fourteen-digit FSSAI licence or registration number. The vegetarian and non-vegetarian symbols are fixed by rule: a green filled circle inside a green square outline for vegetarian food, and a brown filled triangle inside a brown square outline for non-vegetarian food. The FPO mark of the Fruit Products Order survived for processed fruit products but the Order now sits within the food safety law, and the Authority runs the Eat Right India movement for safe and healthy eating.
Other marks, and standards abroad
The Eco Mark scheme was notified in 1991 for household and other consumer products that do least harm to the environment over their life. Its symbol is an earthen pitcher, chosen because the pitcher uses a renewable material, is made without waste and is wholly biodegradable; the criteria are set with the Ministry of Environment, Forest and Climate Change and the mark is awarded by the Bureau of Indian Standards. The BEE star rating, from one star to five, tells the buyer how much electricity an appliance uses; the Bureau of Energy Efficiency was set up on 1 March 2002 under the Energy Conservation Act, 2001 and works under the Ministry of Power. Silk Mark, launched in 2004 by the Silk Mark Organisation of India under the Central Silk Board, certifies pure natural silk; Handloom Mark, launched in 2006, certifies genuine handloom cloth, and India Handmade or the Handicraft Mark follows for handicrafts.
Internationally, the International Organization for Standardization was founded in 1947 with its headquarters at Geneva and publishes the ISO 9000 family for quality management and the ISO 14000 family for environmental management; CE marking is the European conformity mark. Two observance days belong with this topic: World Standards Day on 14 October, and in India National Consumer Rights Day on 24 December, the day the Consumer Protection Act of 1986 received the President’s assent, while World Consumer Rights Day falls on 15 March. The Consumer Protection Act, 2019 replaced the 1986 Act and created the Central Consumer Protection Authority, which began work in 2020 and can act against misleading advertisements and unsafe goods.
Exam Point of View
Questions come in three shapes. The first is "which body issues this mark": BIS for ISI, hallmark and Eco Mark; the Directorate of Marketing and Inspection for Agmark; FSSAI for the food licence; BEE for the star rating; the Silk Mark Organisation under the Central Silk Board for Silk Mark. The second is the Act and the Ministry behind each: BIS Act 2016 with Consumer Affairs, the 1937 Act with Agriculture, the FSS Act 2006 with Health, the Energy Conservation Act 2001 with Power. The third is numerical: the fineness for a given carat, the fourteen digits of an FSSAI number, and the dates 14 October, 24 December and 15 March. The standard traps are to call BIS the issuer of Agmark, to place FSSAI under Consumer Affairs, to give the Agmark laboratory as Faridabad instead of Nagpur, and to swap the green circle with the brown triangle.
Important Facts
| BIS came into being | 1 April 1987, under the BIS Act, 1986 |
|---|---|
| Present law for BIS | Bureau of Indian Standards Act, 2016 |
| ISI stands for | Indian Standards Institution, the body of 1947 that BIS replaced |
| BIS Ministry | Consumer Affairs, Food and Public Distribution; headquarters New Delhi |
| Hallmarking agency | Bureau of Indian Standards, the sole agency |
| Gold hallmarking began | 2000; silver in 2005 |
| HUID | Six-digit alphanumeric Hallmark Unique Identification, introduced 2021 |
| 22 carat gold | Marked 916, that is 91.6 per cent gold |
| 18 carat gold | Marked 750, that is 75 per cent gold |
| Agmark Act | Agricultural Produce (Grading and Marking) Act, 1937 |
| Agmark administered by | Directorate of Marketing and Inspection, headquarters Faridabad |
| Central Agmark Laboratory | Nagpur |
| FSSAI Act and year | Food Safety and Standards Act, 2006; Authority established 2008 |
| FSSAI Ministry | Health and Family Welfare; licence number has fourteen digits |
| Eco Mark | Notified 1991; symbol is an earthen pitcher; awarded by BIS |
| Bureau of Energy Efficiency | Set up 1 March 2002 under the Energy Conservation Act, 2001 |
| Silk Mark | Launched 2004 by the Silk Mark Organisation under the Central Silk Board |
| World Standards Day | 14 October |
Practice MCQs on this topic
Which body issues the ISI mark in India?
- A.Food Safety and Standards Authority of India
- B.Bureau of Indian Standards
- C.Directorate of Marketing and Inspection
- D.Bureau of Energy Efficiency
Show answer
Explanation
The correct answer is B, the Bureau of Indian Standards. The Bureau is India’s National Standards Body and it grants the ISI mark to manufactured goods that conform to the relevant Indian Standard. The initials ISI survive from the Indian Standards Institution of 1947, whose work the Bureau took over when it came into being on 1 April 1987, which is why the mark and the body have different names. Option A is wrong because the Food Safety and Standards Authority of India deals with food, where the mark is a fourteen-digit licence number and the vegetarian or non-vegetarian symbol, not an ISI mark. Option C is wrong because the Directorate of Marketing and Inspection administers Agmark for agricultural produce. Option D is wrong because the Bureau of Energy Efficiency gives the star rating that shows how much electricity an appliance uses.
The Bureau of Indian Standards functions under which Union Ministry?
- A.Ministry of Commerce and Industry
- B.Ministry of Consumer Affairs, Food and Public Distribution
- C.Ministry of Science and Technology
- D.Ministry of Micro, Small and Medium Enterprises
Show answer
Explanation
The correct answer is B, the Ministry of Consumer Affairs, Food and Public Distribution. The Bureau works under the Department of Consumer Affairs in that Ministry, and the Union Minister in charge is the President of the Bureau, because standards and certification exist to protect the consumer. Option A is wrong because the Ministry of Commerce and Industry handles trade, the Department for Promotion of Industry and Internal Trade and intellectual property, not standardisation. Option C is wrong because the Ministry of Science and Technology runs research councils such as the Council of Scientific and Industrial Research. Option D is wrong because the Ministry of Micro, Small and Medium Enterprises promotes small industry; it may help a unit obtain certification, but it neither sets standards nor awards the ISI mark.
Agmark certification in India is given to which category of products?
- A.Electrical appliances
- B.Gold and silver jewellery
- C.Agricultural and allied produce
- D.Handloom cloth
Show answer
Explanation
The correct answer is C, agricultural and allied produce. Agmark is a grade mark given under the Agricultural Produce (Grading and Marking) Act, 1937 to produce such as edible oils, ghee, butter, honey, spices, pulses, wheat flour, besan and eggs, and it is administered by the Directorate of Marketing and Inspection under the Ministry of Agriculture and Farmers’ Welfare. The name is a contraction of agricultural marketing. Option A is wrong because electrical appliances carry the ISI mark and the BEE star rating. Option B is wrong because gold and silver carry the hallmark of the Bureau of Indian Standards, which certifies purity and not grade. Option D is wrong because handloom cloth carries the Handloom Mark launched in 2006, while pure silk carries the Silk Mark of the Silk Mark Organisation of India.
In hallmarking, 22 carat gold is marked with which fineness number?
- A.750
- B.833
- C.916
- D.999
Show answer
Explanation
The correct answer is C, 916. Fineness is the carat value divided by 24 and multiplied by one thousand, so 22 divided by 24 gives 0.916 and the article is marked 22K916, meaning 91.6 per cent gold. This is the usual grade for Indian jewellery because pure gold is too soft to hold a setting. Option A is wrong because 750 is the mark for 18 carat gold, which is 75 per cent gold. Option B is wrong because 833 corresponds to 20 carat gold, at 83.3 per cent. Option D is wrong because 999 is the mark for 24 carat, that is pure gold, which is sold as coins and bars rather than jewellery. Learn the ladder 999, 958, 916, 833, 750 and 585 against 24, 23, 22, 20, 18 and 14 carat, because papers ask it in either direction.
The Food Safety and Standards Authority of India (FSSAI) works under which Union Ministry?
- A.Ministry of Health and Family Welfare
- B.Ministry of Agriculture and Farmers’ Welfare
- C.Ministry of Consumer Affairs, Food and Public Distribution
- D.Ministry of Food Processing Industries
Show answer
Explanation
The correct answer is A, the Ministry of Health and Family Welfare. The Authority was created by the Food Safety and Standards Act, 2006, was established in 2008 and works under that Ministry with its headquarters at New Delhi, because food safety is treated as a public health matter. Option B is wrong because the Ministry of Agriculture and Farmers’ Welfare runs Agmark grading through the Directorate of Marketing and Inspection, which concerns the grade of produce, not its safety. Option C is wrong because the Ministry of Consumer Affairs, Food and Public Distribution handles the Bureau of Indian Standards and the public distribution system. Option D is wrong because the Ministry of Food Processing Industries promotes the processing industry through schemes and parks, and the regulator remains the Authority under the Health Ministry.
What is the symbol of the Eco Mark scheme of India?
- A.A green leaf
- B.An earthen pitcher
- C.A flowing river
- D.A peacock feather
Show answer
Explanation
The correct answer is B, an earthen pitcher. The Eco Mark scheme was notified in 1991 for consumer products that cause the least harm to the environment over their life, and the earthen pitcher was chosen as the symbol because it is made from a renewable material, is produced without generating waste, uses little energy and is wholly biodegradable when broken. The criteria for each product category are framed with the Ministry of Environment, Forest and Climate Change, and the mark itself is awarded by the Bureau of Indian Standards along with the ISI mark. Options A, C and D are wrong because no such symbol was adopted for the scheme; a leaf, a river and a peacock feather are generic images of nature used in various logos, and candidates pick them by guesswork. The pitcher is the single fact to remember here.
The Silk Mark, which certifies pure natural silk, is issued by an organisation under which body?
- A.Central Silk Board
- B.Bureau of Indian Standards
- C.Textiles Committee
- D.Khadi and Village Industries Commission
Show answer
Explanation
The correct answer is A, the Central Silk Board. The Silk Mark is issued by the Silk Mark Organisation of India, launched in 2004, which is a society set up by the Central Silk Board under the Ministry of Textiles; the Board itself was constituted in 1949 and has its headquarters at Bengaluru. The mark is a swing tag or label assuring the buyer that the fabric is pure natural silk and not a blend or an artificial imitation. Option B is wrong because the Bureau of Indian Standards issues the ISI mark, the hallmark and the Eco Mark but not the Silk Mark. Option C is wrong because the Textiles Committee tests and inspects textiles for export quality, a separate function. Option D is wrong because the Khadi and Village Industries Commission certifies khadi and village industry products, which is a different mark altogether.
The Bureau of Energy Efficiency, which gives the star rating to electrical appliances, was set up under which Act?
- A.Electricity Act, 2003
- B.Energy Conservation Act, 2001
- C.Environment (Protection) Act, 1986
- D.Bureau of Indian Standards Act, 2016
Show answer
Explanation
The correct answer is B, the Energy Conservation Act, 2001. The Bureau of Energy Efficiency was set up on 1 March 2002 under that Act and works under the Ministry of Power; its Standards and Labelling programme gives appliances a rating from one star to five stars, where more stars mean less electricity consumed for the same service. Option A is wrong because the Electricity Act, 2003 governs generation, transmission, distribution and trading of electricity and created the regulatory commissions. Option C is wrong because the Environment (Protection) Act, 1986 is the umbrella environmental law under which pollution standards and the Eco Mark criteria are notified. Option D is wrong because the Bureau of Indian Standards Act, 2016 governs the standards body that gives the ISI mark and the hallmark, a different Bureau with a different Ministry.
World Standards Day is observed every year on which date?
- A.15 March
- B.14 October
- C.24 December
- D.1 April
Show answer
Explanation
The correct answer is B, 14 October. World Standards Day is observed on 14 October to mark the day in 1946 on which delegates from twenty-five countries met in London and agreed to create an international standards organisation, which became the International Organization for Standardization, founded in 1947 with its headquarters at Geneva. Option A is wrong because 15 March is World Consumer Rights Day. Option C is wrong because 24 December is National Consumer Rights Day in India, the day on which the Consumer Protection Act of 1986 received the President’s assent. Option D is wrong because 1 April is the date on which the Bureau of Indian Standards came into being in 1987, a fact worth knowing but not an observance day. These four dates are often mixed in a single matching question, so learn them as a set.
The Central Agmark Laboratory, the apex laboratory for Agmark grading, is located at
- A.Faridabad
- B.Nagpur
- C.Pune
- D.Lucknow
Show answer
Explanation
The correct answer is B, Nagpur. The Central Agmark Laboratory at Nagpur is the apex laboratory for the Agmark scheme; it analyses samples, settles disputed results and keeps the standard methods, while regional Agmark laboratories do routine testing elsewhere in the country. Option A is wrong, and it is the trap here, because Faridabad is the headquarters of the Directorate of Marketing and Inspection, the office that administers Agmark; the headquarters and the laboratory are at different places. Option C is wrong because Pune has the National Film Archive of India and the Indian Institute of Tropical Meteorology, not the Agmark laboratory. Option D is wrong because Lucknow has the Indian Institute of Toxicology Research and the National Botanical Research Institute, which do other work. Remember the pair: Directorate at Faridabad, laboratory at Nagpur.
On a packaged food item in India, a brown filled triangle inside a brown square outline indicates
- A.Vegetarian food
- B.Non-vegetarian food
- C.Organic food
- D.Food with added preservatives
Show answer
Explanation
The correct answer is B, non-vegetarian food. Under the food labelling rules a non-vegetarian article must carry a brown filled triangle within a brown square outline, while a vegetarian article carries a green filled circle within a green square outline. The symbol must appear in contrast to the background and close to the brand name, along with the fourteen-digit FSSAI licence or registration number. Option A is wrong because the vegetarian symbol is a green circle, not a brown triangle, and candidates lose the mark by swapping the shapes. Option C is wrong because organic food is certified separately under the Jaivik Bharat identity and the India Organic mark, which is a different label. Option D is wrong because added preservatives, colours and flavours are declared in the ingredient list in words and not through this symbol.
Frequently Asked Questions
What is the difference between the ISI mark and the hallmark?
Both are granted by the Bureau of Indian Standards, but the ISI mark certifies that a manufactured article conforms to an Indian Standard, while the hallmark certifies the purity or fineness of gold or silver. An ISI mark is about conformity to a specification; a hallmark is about the metal content.
What does 916 mean on a gold ornament?
It is the fineness of 22 carat gold, that is 91.6 per cent gold. Fineness is the carat value divided by 24 and multiplied by a thousand, so 24 carat is 999, 22 carat is 916, 18 carat is 750 and 14 carat is 585.
Which products need compulsory ISI certification?
Products where failure endangers life or health, such as Portland cement, LPG cylinders and valves, helmets for two-wheeler riders, packaged drinking water, milk powder and infant milk food, electrical appliances, construction steel and tyres. Such a product may not be made, imported, sold or stocked without the mark.
Who administers Agmark and under which law?
The Directorate of Marketing and Inspection, an attached office of the Ministry of Agriculture and Farmers’ Welfare with headquarters at Faridabad, under the Agricultural Produce (Grading and Marking) Act, 1937. The apex laboratory of the scheme is the Central Agmark Laboratory at Nagpur.
What do the green and brown symbols on food packets mean?
A green filled circle inside a green square outline means the food is vegetarian; a brown filled triangle inside a brown square outline means it is non-vegetarian. The packet must also show the fourteen-digit FSSAI licence or registration number.
Why was an earthen pitcher chosen as the Eco Mark symbol?
Because the pitcher is made from a renewable material, is produced without generating waste, needs little energy and is wholly biodegradable, so it stands for everything the scheme rewards. The Eco Mark was notified in 1991 and is awarded by the Bureau of Indian Standards.
Sources
- About BIS and the Standard Mark — Bureau of Indian Standards
- Agmark Grading and Standardisation — Directorate of Marketing and Inspection, Ministry of Agriculture and Farmers’ Welfare
- Food Safety and Standards Act, 2006 — Government of India





