v3.22.2.2
Notes to Condensed Consolidated Financial Statements (Tables)
3 Months Ended
Aug. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Inventory
       
   August 31, 2022  May 31, 2022
Raw materials  $601,126   $488,393 
Work-in-process   5,137,526    5,166,271 
Finished goods   264,667    300,271 
Gross inventory   6,003,319    5,954,935 
Less allowance for obsolescence   100,000    100,000 
Net inventory  $5,903,319   $5,854,935