Under the Legal Metrology Act, 2009, the mandatory DECLARATION of quantity (net content) and price on pre-packaged commodities is:

The Legal Metrology Act, 2009 and the Legal Metrology (Packaged Commodities) Rules, 2011 make it COMPULSORY for every pre-packaged commodity sold to consumers to carry the declared particulars - including net quantity, maximum retail price, manufacturer's name and address and the date - and sale of a commodity that does not bear the mandatory declaration is an offence punishable under the Act (with the penalties, including fine, that the Act prescribes). This protects consumers from under-filling and enables them to verify quantity and price. The declaration duty is thus not optional; its breach attracts the statutory consequences.