Balance Sheet Information (Summary of Plant and Equipment) (Details) - USD ($)	Mar. 31, 2024	Sep. 30, 2023
Property, Plant and Equipment [Line Items]
Total plant and equipment	$ 5,453,635	$ 5,440,686
Less: accumulated depreciation and amortization	(3,919,439)	(3,787,954)
Plant and equipment, net	1,534,196	1,652,732
Manufacturing Equipment [Member]
Property, Plant and Equipment [Line Items]
Total plant and equipment	$ 3,020,613	3,008,122
Manufacturing Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Life	5 years
Manufacturing Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Life	8 years
Office Equipment, Furniture And Fixtures [Member]
Property, Plant and Equipment [Line Items]
Total plant and equipment	$ 1,472,328	1,471,870
Office Equipment, Furniture And Fixtures [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Life	3 years
Office Equipment, Furniture And Fixtures [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Life	10 years
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Total plant and equipment	$ 960,694	$ 960,694
Leasehold Improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Life	3 years
Leasehold Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Life	8 years