v3.26.1
Note 2 - Significant Accounting Policies - Disaggregation of Revenue (Details) - USD ($)
12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Revenue $ 3,347,082 $ 3,197,110
Chemical [Member]    
Revenue 1,159,583 1,086,707
Electronics [Member]    
Revenue 1,838,152 1,526,236
Engineering [Member]    
Revenue 349,347 584,167
UNITED STATES    
Revenue 2,809,877 2,856,133
UNITED STATES | Chemical [Member]    
Revenue 622,378 745,730
UNITED STATES | Electronics [Member]    
Revenue 1,838,152 1,526,236
UNITED STATES | Engineering [Member]    
Revenue 349,347 584,167
Non-US [Member]    
Revenue 537,205 340,977
Non-US [Member] | Chemical [Member]    
Revenue 537,205 340,977
Non-US [Member] | Electronics [Member]    
Revenue 0 0
Non-US [Member] | Engineering [Member]    
Revenue $ 0 $ 0