Eco-mark is issued by the bureau of indian standards (bis) as a certification mark for the products which are ecologically safe conforming to the standards prescribed by the bis. The scheme first saw its application in 1991. It is voluntary in nature and helps in identifying eco-friendly products in the market. The mark is being issued in around 16 categories like food, medicines, chemicals, electronic goods, paper, lubricating oils, packing materials etc. The eco-mark scheme falls under the ambit of ministry of environment, forest and climate change.