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CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($)
 3 Months Ended 6 Months Ended
Aug. 31, 2022
Aug. 31, 2021
Aug. 31, 2022
Aug. 31, 2021
Income Statement [Abstract]        
Net Sales $ 3,763,329 $ 4,070,467 $ 7,814,864 $ 7,714,935
Cost of Goods Sold 1,867,716 1,996,468 3,812,238 3,816,771
Gross Profit 1,895,613 2,073,999 4,002,626 3,898,164
Operating Expenses        
Research and product development costs 506,490 412,397 1,023,123 826,213
Marketing and selling expenses 776,858 739,603 1,566,720 1,504,245
General and administrative costs 434,687 473,423 854,680 776,222
Total Operating Expenses 1,718,035 1,625,423 3,444,523 3,106,680
Operating Income 177,578 448,576 558,103 791,484
Interest and Dividend Income 18,507 7,640 25,922 11,000
Net unrealized loss on marketable securities (19,172) (31,025)
Paycheck Protection Program Loan Forgiveness 1,005,372
Income Before Income Taxes 176,913 456,216 553,000 1,807,856
Income Tax Expense 14,790 112,392 85,241 197,280
Net Income $ 162,123 $ 343,824 $ 467,759 $ 1,610,576
Basic Earnings Per Share $ 0.01 $ 0.02 $ 0.03 $ 0.10
Diluted Earnings Per Share $ 0.01 $ 0.02 $ 0.03 $ 0.10
Weighted Average Shares - Basic 15,732,550 15,507,484 15,730,862 15,500,952
Weighted Average Shares - Diluted 15,775,156 15,602,359 15,770,544 15,613,930