ISCO INC <ISKO> 2ND QTR ENDS JAN 30 NET Shr 12 cts vs 13 cts Net 414,968 vs 449,533 Revs 5,726,722 vs 5,276,627 Six mths Shr 23 cts vs 33 cts Net 779,981 vs 1,116,857 Revs 11.3 mln vs 11.3 mln