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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - consolidated statements of operations: (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax $ 587,546 $ 628,244 $ 788,045 $ 1,046,149
Product sales        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 557,664 577,360 730,263 755,609
Contract services        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax $ 29,882 $ 50,884 $ 57,782 $ 290,540