CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)	Nov. 30, 2019	May 31, 2019
Current Assets:
Cash and cash equivalents	$ 850,989	$ 686,785
Accounts receivable, less allowance for doubtful accounts of $76,681 and $73,110 as of November 30, 2019 and May 31, 2019, respectively	1,282,944	1,454,652
Inventories	2,190,893	2,151,090
Prepaid expenses and other	186,035	202,402
Total Current Assets	4,510,861	4,494,929
Property and Equipment, net of accumulated depreciation and amortization of $1,813,925 and $1,762,344 as of November 30, 2019 and May 31, 2019, respectively	303,573	351,070
Right of Use Assets, net of amortization	1,823,614
Investments	165,324	165,324
Intangible Assets, net	110,490	107,209
Other Assets	124,759	126,832
Total Assets	7,038,621	5,245,364
Current Liabilities:
Accounts payable and accrued expenses	1,344,791	1,037,565
Accrued compensation	239,072	226,829
Equity financing deposit-officer	200,000
Lease liability, current portion	200,401
Total Current Liabilities	1,984,264	1,264,394
Lease Liability, net of current portion	1,678,436
Total Liabilities	3,662,700	1,264,394
Commitments and Contingencies (Notes 6 and 7)
Shareholders' Equity:
Preferred stock, no par value authorized 5,000,000 shares, none issued and none outstanding at November 30, 2019 and May 31, 2019
Common stock, $0.08 par value authorized 25,000,000 shares, issued and outstanding 9,851,090 and 9,677,188 at November 30, 2019 and May 31, 2019, respectively	788,085	774,173
Additional paid-in-capital	23,223,269	22,830,006
Common stock subscribed	(15,583)
Accumulated other comprehensive loss	(41,616)	(36,531)
Accumulated deficit	(20,578,234)	(19,586,678)
Total Shareholders' Equity	3,375,921	3,980,970
Total Liabilities and Shareholders' Equity	$ 7,038,621	$ 5,245,364