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INVENTORY AND RESEARCH AND DEVELOPMENT SUPPLIES
 12 Months Ended
Dec. 31, 2020
INVENTORY AND RESEARCH AND DEVELOPMENT SUPPLIES  
INVENTORY AND RESEARCH AND DEVELOPMENT SUPPLIES

9.     INVENTORY AND RESEARCH AND DEVELOPMENT SUPPLIES

 

 

 

 

 

 

 

 

 

 

 

 

December 31, 

 

December 31, 

 

December 31, 

 

    

2020

    

2019

    

2018

Raw materials

 

$

694,043

 

$

500,263

 

$

301,693

Work in progress

 

 

 —

 

 

 —

 

 

2,435

Finished goods

 

 

145,429

 

 

118,387

 

 

14,007

 

 

$

839,472

 

$

618,650

 

$

318,135

 

 

 

 

 

 

 

 

 

 

Research and development supplies

 

$

167,378

 

$

671,845

 

$

1,274,653

 

During the years ended December 31, 2020, 2019 and 2018 the Company did not write down any inventory.  During the year ended December 31, 2020, $446,239 of inventory was expensed in cost of goods sold (year ended December 31, 2019 and 2018: $458,436 and $366,258).