<ARTICLE> 5
<CIK> 0001019779
<NAME> CUNO, INC.
<MULTIPLIER> 1,000
<CURRENCY> US DOLLAR

                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          OCT-31-2000
<PERIOD-START>                             NOV-01-1999
<PERIOD-END>                               JAN-31-2000
<EXCHANGE-RATE>                                      1
<CASH>                                           3,878
<SECURITIES>                                         0
<RECEIVABLES>                                   48,578
<ALLOWANCES>                                     1,714
<INVENTORY>                                     29,111
<CURRENT-ASSETS>                                90,287
<PP&E>                                         110,598
<DEPRECIATION>                                  58,449
<TOTAL-ASSETS>                                 176,917
<CURRENT-LIABILITIES>                           55,289
<BONDS>                                          4,780
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                            16
<OTHER-SE>                                     107,616
<TOTAL-LIABILITY-AND-EQUITY>                   176,917
<SALES>                                         57,734
<TOTAL-REVENUES>                                57,734
<CGS>                                           33,409
<TOTAL-COSTS>                                   33,409
<OTHER-EXPENSES>                                18,916
<LOSS-PROVISION>                                   136
<INTEREST-EXPENSE>                                 241
<INCOME-PRETAX>                                  5,272
<INCOME-TAX>                                     2,014
<INCOME-CONTINUING>                              3,258
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     3,258
<EPS-BASIC>                                       0.20
<EPS-DILUTED>                                     0.20