NCH CORP <NCH> 3RD QTR JAN 31 NET Shr 51 cts vs 44 cts Net 4,710,000 vs 4,086,000 Sales 109.2 mln vs 98.2 mln Nine mths Shr 1.62 dlrs vs 1.39 dlrs Net 15.0 mln vs 13.6 mln Sales 314.6 mln vs 279.7 mln