Foreign institutional investors (FIIs) were net buyuers of Rs 229.80 crore on July 25, Tuesday according to data released by Sebi today.While FIIs made gross purchases of Rs 1461 crore, gross sales totalled Rs 1231.20 crore.Mutual funds (MFs) were net buyers of Rs 235.21 crore on Tuesday. MFs made purchases of Rs 637.36 crore and sales of Rs 402.15 crore.