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Inventories and major vendors
6 Months Ended
Apr. 30, 2019
Inventory Disclosure [Abstract]  
Inventories and major vendors
Note 4 - Inventories and major vendors
 
Inventories, consisting of materials, labor and manufacturing overhead, are stated at the lower of cost or net realizable value. Cost has been determined using the weighted average cost method. Inventories consist of the following (in thousands):
 
  
April 30, 2019
  
October 31, 2018
 
       
Raw materials and supplies $3,442  $2,711 
Work in process  687   603 
Finished goods  3,803   3,799 
         
Totals $7,932  $7,113 
 
Two vendors accounted for 11% and 10% of inventory purchases for the three months ended April 30, 2019. For the six months ended April 30, 2019, one of these vendors accounted for 14% of inventory purchases, and a different vendor accounted for 13% of inventory purchases. For the three months ended April 30, 2018, one vendor accounted for 51% of inventory purchases. This same vendor accounted for 45% of inventory purchases for the six months ended April 30, 2018. The Company has arrangements with these vendors to purchase products based on purchase orders periodically issued by the Company.