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Amount of valuation reserve for inventory.

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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($)		3 Months Ended
SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($)	May 31, 2020	Aug. 31, 2020	Aug. 31, 2019
SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Cash, Uninsured Amount		$ 6,758,700
Threshold Period Past Due for Write-off of Trade Accounts Receivable		90 days
Inventory Valuation Reserves	$ 67,000	$ 72,000
Depreciation, Depletion and Amortization		26,732	$ 29,498
Amortization of Intangible Assets		$ 5,838	5,780
Equity Method Investment, Ownership Percentage		6.00%
Proceeds from Stock Options Exercised		$ 14,900	34,028
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares)		171,000
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in Dollars per share)		$ 7.46
Research and Development Expense		$ 674,693	370,466
Deferred Tax Assets, Valuation Allowance	$ 3,175,000		$ 3,522,000
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in Shares)		1,925,750	1,416,584
Convertible Preferred Stock, Shares Issued upon Conversion (in Shares)		321,429
Minimum [Member]
SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Property, Plant and Equipment, Useful Life		5 years
Maximum [Member]
SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Property, Plant and Equipment, Useful Life		10 years
Distribution Rights [Member]
SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Finite-Lived Intangible Asset, Useful Life		18 years
Purchased Technology Rights [Member]
SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Finite-Lived Intangible Asset, Useful Life		10 years
Patents [Member]
SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Finite-Lived Intangible Asset, Useful Life		20 years
Customer Concentration Risk [Member] \| Revenue Benchmark [Member]
SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Concentration Risk, Percentage		40.10%	45.80%
Customer Concentration Risk [Member] \| Accounts Receivable [Member]
SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Concentration Risk, Percentage	80.00%	62.10%
Customer Concentration Risk [Member] \| South America [Member] \| Accounts Receivable [Member]
SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Concentration Risk, Percentage		43.60%
Supplier Concentration Risk [Member] \| Cost of Goods and Service, Product and Service Benchmark [Member]
SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Concentration Risk, Percentage		63.80%	47.50%
Supplier Concentration Risk [Member] \| Accounts Payable [Member]
SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Concentration Risk, Percentage	26.90%	50.00%
Share-based Payment Arrangement, Option [Member]
SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period (in Shares)		12,500
Share-based Payment Arrangement, Option, Exercise Price Range, Exercisable, Weighted Average Exercise Price (in Dollars per share)		$ 1.20
Proceeds from Stock Options Exercised		$ 14,900
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares)		171,000
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in Dollars per share)		$ 7.46