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BUSINESS SEGMENT DATA (Policies)
6 Months Ended
Jul. 31, 2012
BUSINESS SEGMENT DATA [Abstract]  
Business segments
The Company has five operating segments which are aggregated into three reportable segments: Product Recovery/Pollution Control Technologies, Fluid Handling Technologies and Mefiag Filtration Technologies, and one other segment (Filtration/Purification Technologies). The Filtration/Purification Technologies segment is comprised of two operating segments that meet the criteria for aggregation.

The Company expects, based upon the current financial performance of its business units, that the current segment reporting will be presented in periods in the foreseeable future using the three reportable segments and the one other segment.

The accounting policies of the reporting segments are the same as those described in the summary of significant accounting policies. The Company evaluates the performance of these segments based on many factors including sales, sales trends, margins and operating performance.
 
No significant intercompany revenue is realized in these reporting segments. Interest income and expense are not included in the measure of segment profit reviewed by management. Income taxes are also not included in the measure of segment operating profit reviewed by management.

The Company follows the practice of allocating general corporate expenses, including depreciation and amortization expense, among the reporting segments based upon a percentage of sales.