Commitments and Contingencies - Operating leases and purchase obligations (Details) - USD ($)	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Operating leases
Operating Lease, Expense	$ 103,000
Operating leases future minimum payments due	46,474
Purchase Obligations
Purchase obligations on open purchase orders	2,115,971	$ 853,123	$ 1,082,928
Product Liability
Product liability insurance	$ 50,000,000