Under the National Iodine Deficiency Disorders Control Programme, iodised salt sold at the retail or household (consumer) level in India must contain iodine at a minimum concentration of:

• A 5 parts per million
• B 15 parts per million ✓
• C 30 parts per million
• D 50 parts per million

Explanation

Indian standards require 30 ppm iodine at the production or factory level so that, allowing for losses during storage and transport, at least 15 ppm remains at the consumer level. This margin accounts for iodine volatilisation from poorly packaged salt kept in humid conditions. Testing at household level is done with the salt testing kit (iodometric method).

Reference: Park's Textbook of Preventive and Social Medicine, 26th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

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