At the National Commodity and Derivatives Exchange, guargum for delivery in November contracts fell Rs 180, or 1.82 per cent, to Rs 9,700 per quintal and open interest stood at 1,344 lots.
Also, most-active October month delivery contracts dropped Rs 130, or 1.34 per cent, to Rs 9,590 per quintal in an open interest of 19,211 lots, while delivery in July shed Rs 70, or 0.76 per cent, to Rs 9,200 per quintal, with an open interest of 572 lots.