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Supplemental Balance Sheet Disclosures - Inventories and Prepaid expenses and other current assets (Details) - USD ($)
Mar. 31, 2022
Sep. 30, 2021
Inventory Valuation    
Raw materials $ 3,751,366 $ 3,729,692
Work-in-process 732,778 629,814
Finished goods 205,117 185,886
Inventories 4,689,261 4,545,392
Prepaid expenses and other current assets    
Prepaid insurance 544,254 318,138
Other 333,777 514,938
Total prepaid expenses and other current assets $ 878,031 $ 833,076