Mumbai, Aug 31: Coca Cola India on Saturday claimed it has received a “clean chit” from Britain's Central Science Laboratory (CSL), which conducted tests for pesticide residues in two bottles each of Coca Cola and Pepsi. The laboratory tested samples, which were collected from a Delhi restaurant, for traces of 35 pesticides to a level of one part in 10 billion, a Coca Cola India press release said here, quoting vice-president Sunil Gupta. Bureau Report