CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)	Feb. 28, 2023	May 31, 2022
Current Assets:
Cash and cash equivalents	$ 3,345,212	$ 5,916,983
Accounts receivable, less allowance for doubtful accounts of $17,432 and $153,231 as of Feburary 28, 2023 and May 31, 2022, respectively	754,559	773,818
Inventories, net of inventory reserves of $807,576 and $845,549 as of Feburary 28, 2023 and May 31, 2022, respectively	2,064,152	2,416,447
Prepaid expenses and other	318,448	320,283
Total current assets	6,482,371	9,427,531
Property and equipment, net of accumulated depreciation and amortization of $1,316,268 and $1,305,360 as of Feburary 28, 2023 and May 31, 2022, respectively	227,589	214,487
Right of use assets, net of accumulated amortization of $927,077 and $724,802 as of Feburary 28, 2023 and May 31, 2022, respectively	1,101,648	1,301,834
Investments	165,324	165,324
Intangible assets, net of accumulated amortization of $27,383 and $18,994 as of Feburary 28, 2023 and May 31, 2022, respectively	154,638	169,516
Other assets	78,598	95,588
Total Assets	8,210,168	11,374,280
Current Liabilities:
Accounts payable and accrued expenses	387,228	972,372
Accrued compensation	520,457	646,944
Advance from customers	138,013	50,670
Lease liability, current portion	349,410	341,296
Total current liabilities	1,395,108	2,011,282
Lease liability, net of current portion	828,944	1,038,284
Total Liabilities	2,224,052	3,049,566
Commitments and contingencies(Notes 5-7)
Common stock, $0.08 par value, 25,000,000 shares authorized, 13,488,313 and 12,867,924 issued and outstanding at Feburary 28, 2023 and May 31, 2022, respectively	1,079,065	1,029,432
Additional paid-in-capital	45,443,164	42,446,597
Accumulated other comprehensive loss	(110,911)	(73,936)
Accumulated deficit	(40,425,202)	(35,077,379)
Total Shareholders' Equity	5,986,116	8,324,714
Total Liabilities and Shareholders' Equity	$ 8,210,168	$ 11,374,280