Soon, reusable water bottles and utensils made of various material cannot be sold without the ISI mark in Tamil Nadu.
The Bureau of Indian Standards (BIS) has made certification mandatory and developed mandatory quality control order for these products to curb sales of substandard products.
The widely used insulated flasks and containers in households had been brought under the ambit of mandatory BIS certification.
Even the tinplate packaging used for food and beverages like infant milk food, instant coffee, tea and condensed milk would now need to get compulsory BIS certification.