Condensed Consolidated Statements of Income (unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Feb. 29, 2024	Feb. 28, 2023	Feb. 29, 2024	Feb. 28, 2023
Condensed Consolidated Statements of Income (unaudited)
Sales, net	$ 12,254,093	$ 9,891,272	$ 32,517,596	$ 29,479,337
Cost of goods sold	6,501,227	5,629,523	17,569,487	17,357,733
Gross profit	5,752,866	4,261,749	14,948,109	12,121,604
Research and development costs	108,363	190,688	321,518	881,335
Selling, general and administrative expenses	2,651,289	2,266,115	7,660,172	6,500,487
Operating income	2,993,214	1,804,946	6,966,419	4,739,782
Other income, net	362,707	239,941	1,122,713	432,984
Income before provision for income taxes	3,355,921	2,044,887	8,089,132	5,172,766
Provision for income taxes	659,000	386,000	1,563,000	952,000
Net income	$ 2,696,921	$ 1,658,887	$ 6,526,132	$ 4,220,766
Basic and diluted earnings per common share	$ 0.82	$ 0.47	$ 1.91	$ 1.2