Condensed Consolidated Statements of Income - USD ($)	3 Months Ended		6 Months Ended
	Aug. 31, 2021	Aug. 31, 2020	Aug. 31, 2021	Aug. 31, 2020
Income Statement [Abstract]
Net Sales	$ 4,070,467	$ 3,480,641	$ 7,714,935	$ 6,909,185
Cost of Goods Sold	1,996,468	1,859,675	3,816,771	3,727,486
Gross Profit	2,073,999	1,620,966	3,898,164	3,181,699
Operating Expenses
Research and product development costs	412,397	423,516	826,213	834,940
Marketing and selling expenses	739,603	682,270	1,504,245	1,388,987
General and administrative costs	473,423	313,852	776,222	572,254
Total Operating Expenses	1,625,423	1,419,638	3,106,680	2,796,181
Operating Income	448,576	201,328	791,484	385,518
Interest Expense		(9,287)		(17,704)
Interest and Dividend Income	7,640	2,837	11,000	25,483
Other Income		8,084		19,519
Paycheck Protection Program Loan Forgiveness			1,005,372
Income Before Income Taxes	456,216	202,962	1,807,856	412,816
Income Tax Expense	112,392	25,199	197,280	67,125
Net Income	$ 343,824	$ 177,763	$ 1,610,576	$ 345,691
Basic Earnings Per Share	$ 0.02	$ 0.01	$ 0.10	$ 0.02
Diluted Earnings Per Share	$ 0.02	$ 0.01	$ 0.10	$ 0.02
Weighted Average Shares - Basic	15,507,484	15,424,126	15,500,952	15,410,952
Weighted Average Shares - Diluted	15,602,359	15,533,010	15,613,930	15,530,910