Section 8(1)(a) in The Delhi Plastic Bag (Manufacture, Sales and Usage) and Non-Biodegradable Garbage (Control) Act, 2000
(a)that the recycled bags would be coloured and pigmented and dyes used in manufacturing of the plastic bags shall be in accordance with the pigments & dyes listed in IS 9833 : 1981. Reprocessing or recycling is undertaken in accordance with IS 14534 : 1998 titled "Guidelines for recycling of plastics" and shall be marked-(i)recycled bag;(ii)unsafe for carrying food;(iii)name and address of the manufacturer;