RESTATEMENT OF PREVIOUSLY ISSUED FINANCIAL STATEMENTS (Details) - Restatement on the consolidated statement of operations and the consolidated statement of cash flows - USD ($)	3 Months Ended		6 Months Ended
	Nov. 30, 2021	Nov. 30, 2020	Nov. 30, 2020
Previously Reported [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of sales		$ 1,011,030	$ 1,971,960
Gross Profit		361,496	544,372
Operating Expenses:
Selling, general and administrative		1,254,847	2,419,411
Research and development		586,403	1,261,096
Total operating expense		1,841,250	3,680,507
Loss from operations		(1,479,754)	(3,136,135)
Loss before income taxes		(1,471,771)	(3,120,061)
Net loss	$ (3,134,579)	$ (1,485,164)	$ (3,134,579)
Basic net loss per common share (in Dollars per share)		$ (0.13)	$ (0.27)
Diluted net loss per common share (in Dollars per share)		$ (0.13)	$ (0.27)
Comprehensive loss			$ (3,137,829)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock option expense	24,227
Net cash used in operating activities	(2,880,218)
Cash and cash equivalents at end of period	5,683,787
Revision of Prior Period, Error Correction, Adjustment [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of sales		$ 52,777	117,564
Gross Profit		(52,777)	(117,564)
Operating Expenses:
Selling, general and administrative		149,999	291,379
Research and development		30,158	66,970
Total operating expense		180,157	358,349
Loss from operations		(232,934)	(475,913)
Loss before income taxes		(232,934)	(475,913)
Net loss	(475,913)	$ (232,934)	$ (475,913)
Basic net loss per common share (in Dollars per share)		$ (0.02)	$ (0.04)
Diluted net loss per common share (in Dollars per share)		$ (0.02)	$ (0.04)
Comprehensive loss			$ (475,913)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock option expense	475,913
Net cash used in operating activities
Cash and cash equivalents at end of period
Restatement Of Companys Financial Statements [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of sales		$ 1,063,807	2,089,524
Gross Profit		308,719	426,808
Operating Expenses:
Selling, general and administrative		1,404,846	2,710,790
Research and development		616,561	1,328,066
Total operating expense		2,021,407	4,038,856
Loss from operations		(1,712,688)	(3,612,048)
Loss before income taxes		(1,704,705)	(3,595,974)
Net loss	(3,610,492)	$ (1,718,098)	$ (3,610,492)
Basic net loss per common share (in Dollars per share)		$ (0.15)	$ (0.31)
Diluted net loss per common share (in Dollars per share)		$ (0.15)	$ (0.31)
Comprehensive loss			$ (3,613,742)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock option expense	500,140
Net cash used in operating activities	(2,880,218)
Cash and cash equivalents at end of period	$ 5,683,787