CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)	Feb. 28, 2017	May 31, 2016
Current Assets:
Cash and cash equivalents	$ 1,541,708	$ 1,888,925
Accounts receivable, less allowance for doubtful accounts of $67,595 and $8,405 as of February 28, 2017 and May 31, 2016, respectively	1,071,846	969,474
Inventories, net	1,818,224	1,863,091
Prepaid expenses and other	212,030	113,578
Total current assets	4,643,808	4,835,068
Property and Equipment, net of accumulated depreciation and amortization of $1,513,598 and $1,423,900 as of February 28, 2017 and May 31, 2016, respectively	368,332	380,659
Deferred Tax Assets	41,000	41,000
Investments	165,324	165,324
Intangible Assets, net	193,374	248,801
Other Assets	64,838	55,653
Total Assets	5,476,676	5,726,505
Current Liabilities:
Accounts payable and accrued expenses	492,674	333,485
Accrued compensation	164,070	172,542
Total current liabilities	656,744	506,027
Commitments and Contingencies (Note 5)
Shareholders' Equity:
Preferred stock, no par value authorized 5,000,000 shares , none issued and none outstanding at February 28, 2017 and May 31, 2016
Common stock, $0.08 par value authorized 25,000,000 shares, issued and outstanding 8,505,173 and 8,169,673 at February 28, 2017 and May 31, 2016, respectively	680,412	653,573
Additional paid-in-capital	19,536,077	19,399,720
Accumulated other comprehensive loss	(14,587)	(13,586)
Accumulated deficit	(15,381,970)	(14,819,229)
Total Shareholders' Equity	4,819,932	5,220,478
Total Liabilities and Shareholders' Equity	$ 5,476,676	$ 5,726,505

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.

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Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.