Inflation dropped to a new low of 3.13% during the week ended August 1 from 3.35% in the previous week due to cheaper iron ore and manufactured and essential non-food items.The wholesale price index (WPI) remained unchanged at the previous week's level of 194.1 points, but was higer than 188.2 points last year. The government kept the final WPI estimate at the provisional level of 192.9 points and inflation at 4.1% for the week ended June 18.