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4. STOCK-BASED COMPENSATION (Tables)
6 Months Ended
Dec. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of stock-based compensation expense
   Three Months
Ended December 31
   Six Months
Ended December 31
 
   2017   2016   2017   2016 
Cost of Goods Sold  $   $8,669   $8,669   $17,338 
Research and Development   320    6,692    7,012    16,009 
Selling, General and Administrative   6,651    34,171    17,347    77,086 
Stock Based Compensation Expense  $6,971   $49,532   $33,028   $110,433 
Stock option activity
      Options Outstanding  
      Number of
Shares
      Weighted Average
Exercise Price
      Weighted Average
Contractual Life
 
Outstanding at June 30, 2017     1,078,400     $ 0.78       7.01 years  
Granted     25,000                  
Expired or Cancelled     (61,200                
Outstanding at December 31, 2017     1,042,200     $ 0.79       6.57 years  
Stock options outstanding by exercise price range
Range of Exercise
Prices
    Number of
Shares
    Weighted-
Average
Remaining
Contractual Life
(years)
    Weighted-
Average
Exercise
Price
    Exercisable
Number of
Shares
    Exercisable
Weighted-
Average
Exercise
Price
 
$ 0.27       40,000       3.54     $ 0.27       40,000     $ 0.27  
$ 0.40       15,000       9.33     $ 0.40       5,000     $ 0.40  
$ 0.48       60,000       8.25     $ 0.48       40,000     $ 0.48  
$ 0.50       80,000       8.47     $ 0.50       45,000     $ 0.50  
$ 0.50       20,000       3.47     $ 0.50       20,000     $ 0.50  
$ 0.55       29,500       4.11     $ 0.55       29,500     $ 0.55  
$ 0.65       25,000       9.86     $ 0.65       0     $ 0.65  
$ 0.73       514,500       7.38     $ 0.73       474,500     $ 0.73  
$ 0.85       9,000       5.01     $ 0.85       9,000     $ 0.85  
$ 0.90       9,000       6.01     $ 0.90       9,000     $ 0.90  
$ 0.95       30,000       6.53     $ 0.95       30,000     $ 0.95  
$ 1.20       207,800       4.17     $ 1.20       207,800     $ 1.20  
$ 1.25       1,200       0.90     $ 1.25       1,200     $ 1.25  
$ 1.35       1,200       1.90     $ 1.35       1,200     $ 1.35  
$ 0.27–$1.35       1,042,200       6.57     $ 0.77       912,200     $ 0.79