Significant Accounting Policies (Details Narrative) - USD ($)	12 Months Ended
Feb. 28, 2021	Feb. 29, 2020
Advertising expense	$ 78,206	$ 297,297
Concentration of Credit Risk		71.00%
Marketable securities including mutual funds	4,563,470	$ 4,219,240
Grant receivable		100,000
Energy efficiency related improvements		580,000
Capital expenditure grant proceeds	100,000
Accumulated amortization of patents	181,922	$ 171,210
Annual Amortization Expense of Intangible Assets For the Next Five Years
Annual amortization expense this year	11,000
Annual amortization expense year two	11,000
Annual amortization expense year three	11,000
Annual amortization expense year four	11,000
Annual amortization expense year five	$ 11,000
Domestic Patents
Useful life of intangible assets	17 years
Foreign Patents
Useful life of intangible assets	12 years
Equipment and Furnishings
Annual Amortization Expense of Intangible Assets For the Next Five Years
Property, plant and equipment, estimated useful lives	Three to Five Years
Depreciation method used for equipment and furnishings	Straight-Line Method
Buildings
Annual Amortization Expense of Intangible Assets For the Next Five Years
Property, plant and equipment, estimated useful lives	40 Years
Depreciation method used for equipment and furnishings	Straight-Line Method
Sales \| Customer
Concentration of Credit Risk	28.00%	30.00%
Accounts Receivable \| Customer
Concentration of Credit Risk	64.00%	67.00%

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Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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