How much pollution is in the air was being unknown but now the polluted particles in the air will be checked and a precise figure will be ready. The Ministry of Environment (Central Pollution Board) has entrusted the responsibility of making standards on policing to NPL. In the next two months, all the machines that are conducting pollution level testing in Delhi will have to get certification from NPL. NPL will check the range of pollution. This will provide the right information about the number of harmful particles available in the air. This is called Wind tunnel.
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