Quarterly report pursuant to Section 13 or 15(d)

Organization and Summary of Significant Accounting Policies - Components of Inventories (Details)

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Organization and Summary of Significant Accounting Policies - Components of Inventories (Details) - USD ($)
Jun. 30, 2022
Dec. 31, 2021
Organization and Summary of Significant Accounting Policies    
Raw materials and supplies $ 403,000 $ 227,000
Finished goods 66,000 66,000
Total inventories $ 469,000 $ 293,000