Note 11 - Segment and Geographic Information - Net Sales by Segment (Details) - USD ($)	3 Months Ended	6 Months Ended
Feb. 28, 2023	Feb. 28, 2022	Feb. 28, 2023	Feb. 28, 2022
Net sales	$ 18,270,825	$ 16,748,639	$ 38,223,591	$ 34,942,052
Fee	$ 1,252,746	$ 1,246,908	$ 2,434,551	$ 2,505,767
Percentage of fee	100.00%	100.00%	100.00%	100.00%
GERMANY
Fee	$ 202,964	$ 216,992	$ 396,792	$ 435,422
Percentage of fee	16.20%	17.40%	16.30%	17.40%
POLAND
Fee	$ 199,927	$ 172,700	$ 386,623	$ 349,626
Percentage of fee	16.00%	13.90%	15.90%	14.00%
JAPAN
Fee	$ 153,795	$ 151,933	$ 301,715	$ 318,740
Percentage of fee	12.30%	12.20%	12.40%	12.70%
FRANCE
Fee	$ 118,938	$ 115,663	$ 228,295	$ 231,958
Percentage of fee	9.50%	9.30%	9.40%	9.30%
SWEDEN
Fee	$ 112,615	$ 99,178	$ 213,051	$ 207,248
Percentage of fee	9.00%	8.00%	8.80%	8.30%
FINLAND
Fee	$ 91,620	$ 85,426	$ 182,052	$ 165,599
Percentage of fee	7.30%	6.90%	7.50%	6.60%
THAILAND
Fee	$ 91,601	$ 87,918	$ 174,557	$ 175,472
Percentage of fee	7.30%	7.10%	7.20%	7.00%
CZECHIA
Fee	$ 91,001	$ 69,386	$ 171,333	$ 139,483
Percentage of fee	7.30%	5.60%	7.00%	5.60%
KOREA, REPUBLIC OF
Fee	$ 65,803	$ 64,173	$ 129,197	$ 126,800
Percentage of fee	5.30%	5.10%	5.30%	5.10%
UNITED KINGDOM
Fee	$ 65,648	$ 86,736	$ 123,339	$ 181,663
Percentage of fee	5.20%	7.00%	5.10%	7.20%
Other Countries [Member]
Net sales	$ 3,076,885	$ 2,464,066	$ 5,590,505	$ 4,670,103
Fee	$ 58,834	$ 96,803	$ 127,597	$ 173,756
Percentage of fee	4.60%	7.50%	5.10%	6.80%
ZERUST [Member]
Net sales	$ 14,458,747	$ 13,117,777	$ 29,828,748	$ 27,541,562
NaturTec [Member]
Net sales	$ 3,812,078	$ 3,630,862	$ 8,394,843	$ 7,400,490