Quarterly report pursuant to Section 13 or 15(d)

Inventory (Tables)

v3.19.3.a.u2
Inventory (Tables)
6 Months Ended
Nov. 30, 2019
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current [Table Text Block]
Inventory, consisting of material, overhead, labor, and manufacturing overhead, is stated at the lower of cost (first-in, first-out) or market, and consists of the following:

   

November 30,

   

May 31,

 
   

2019

   

2019

 

Raw materials

  $ 188,658     $ 323,635  

Finished goods

    412,298       423,198  

Total

  $ 600,956     $ 746,833