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Note 9 - Earnings Per Share - Amounts Used in Computing Earnings Per Share (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Net Income/(Loss) attributable to LiqTech International Inc.	$ (9,808,360)	$ 39,616
Weighted average number of common shares used in basic earnings per share (in shares)	21,209,118	19,652,277
Effect of dilutive securities, stock options, warrants, and RSUs (in shares)	0	15,475
Weighted average number of common shares and potential dilutive common shares outstanding used in dilutive earnings per share (in shares)	21,209,118	19,667,752

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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